### CBSE X Maths Some Applications of Trigonometry

## angle

### CBSE X Maths Introduction to Trigonometry

## If 7tan Φ = 4, then find the value of 7sinΦ - 3cos Φ
—————————
7sinΦ + 3cos,Φ .

**pdcavita**18th November 2017 11:27 AM

### CBSE X Maths Introduction to Trigonometry

## If √3 tanΦ = 3sinΦ , then find the value of sin²Φ - cos²Φ .

**pdcavita**18th November 2017 11:35 AM

### CBSE X Maths Introduction to Trigonometry

## If sec A=17/8 , show that 3-4 sin ²A/4 cos² A - 3 = 3- tan² A /1-3 tan² A.

**pdcavita**18th November 2017 12:56 PM

### CBSE X Maths Introduction to Trigonometry

## Evaluate sec² (90°-Φ) - cot²Φ / 2 (sin²25° + sin²65°)

**pdcavita**18th November 2017 1:07 PM

### CBSE X Maths Introduction to Trigonometry

## Prove that sinA - cosA +1/ sinA + cosA - 1 =1/secA - tanA.

**pdcavita**18th November 2017 1:13 PM

### CBSE X Maths Introduction to Trigonometry

## Ohh.... Tq Q1. Prove that( cosecA - sinA) (secA - cosA) = 1/ tanA - cotA.

**pdcavita**19th November 2017 2:11 PM

### CBSE X Maths Some Applications of Trigonometry

## The angle of elevation of the top of a tower from certain point is 30°. If the observer moves 20m towards the tower, the angle of elevation of the top increases by 15°. Find the height of the tower.

**pdcavita**19th November 2017 2:18 PM

### CBSE X Maths Some Applications of Trigonometry

## The angle of elevation Φ of the top of a lighthouse as seen by a person on the ground is such that tanΦ = 5/12. When the person moves a distance of 240m towards the lighthouse, the angle of elevation becomes Φ, such that tanΦ=3/4.
Find the height of the lighthouse.

**pdcavita**19th November 2017 2:26 PM

### CBSE X Maths Some Applications of Trigonometry

## From a window 15m high above the ground in a street, the angles of elevation and depression of the top and foot of another house on the opposite side of the street are 30° and 45°, respectively. Show that the height of the opposite house is 23.66 m. (take √3 = 1.732)

**pdcavita**19th November 2017 2:32 PM

### CBSE X Maths Some Applications of Trigonometry

## The length of the shadow of a tower standing on ground level is found to be 2x m longer when the sun's altitude is 30° than when it was 45°. Prove that the height of tower is (√3 + 1)x m.

**pdcavita**19th November 2017 2:39 PM

### CBSE X Maths Some Applications of Trigonometry

## Sunita is an electrician and she has to repair an electric fault on a pole of height 5m. She needs to reach to a point on the pole 1.3m below the top of the pole to undertake the repair work. What should be the length of ladder that she should use which, when inclined at an angle of 60° from the horizontal, would she enable her to reach the required position ? Further how far from the foot of the pole should she place the foot of the ladder? What value is indicated from this question?

**pdcavita**19th November 2017 2:47 PM

### CBSE X Maths Some Applications of Trigonometry

## A spherical balloon of radius r subtends an angle Φ at the eye of an observer. If the angle of elevation of its centre is Φ , then find the height of the centre of the balloon .

**pdcavita**19th November 2017 2:53 PM

### CBSE X Maths Some Applications of Trigonometry

## A bird is sitting on the top of a tree which is 80 m high. The angle of elevation of the bird from a point on the ground is 45°. The bird flies away from the point of observation horizontally and remains a constant height. After 2 s, the angle of elevation of the bird from the point of observation becomes 30°. Find the speed of flying of the bird.

**pdcavita**19th November 2017 2:58 PM

### Gujarat - Gujarati Medium IX ALL Subject ત્રિકોણ

## QID : 65 - In a triangle the length of the side opposite the right angle is 9√3 cm, what is the length of the side opposite to the angle which measures 30 degree?

**aryap7964**6th December 2017 3:57 PM

### CBSE IX Maths Triangles

## Please solve question no. 60

**vikasg13.hardware**29th December 2017 11:28 AM

### JEE Plances JEE (Main) Maths

## if a=secA-tanA , b=cosecA+cotA then a= interms of b

**bugadasuvarna**4th January 2018 9:16 PM

### CBSE X Maths Introduction to Trigonometry

## if cot theta= 1/ root 3, show that 1-cos square theta/ 2- sin square theta = 3/5.

**sanyam**5th January 2018 1:17 PM

### CBSE X Maths Introduction to Trigonometry

## Answer the following

**tultuldutta58**8th January 2018 3:20 AM

### ICSE X Maths Trigonometrical Identities

## Plz solve ques 51 urgently

**lovemaan5500**14th January 2018 2:18 PM

### JEE Plances JEE (Main) Maths

## angle of elevation of bottom of window 10 metre above ground level is 30. a pole projecting outwards from the bottom of the window makes an angle of 30 with the wall if angle of elevtion of the pole from the same point is 60 find the height of the polewith figure pls

**risheelchheda19**15th January 2018 4:26 PM

### ICSE IX Maths

## ABC is a right triangle at right angled at A and AD is a median. BA is produced to E such that AB = AE and join ED. AB = 6 , BC = 10 cm , find the artea of triangle BED?

**nisha_vini29**17th January 2018 12:44 AM

### CBSE X Maths Introduction to Trigonometry

## oemetricaly derive the value of sin 30

**amolshukal.2001**31st January 2018 8:47 AM

### CBSE X Maths Introduction to Trigonometry

## Geometrical derive the value of sin zero

**amolshukal.2001**31st January 2018 8:53 AM

### CBSE XI Science Maths Trigonometric Functions

## If secx+tanx=4 ,find the value of sinx ,cosx, secx and tanx?

**hemanttkumarr**31st January 2018 9:30 AM

### CBSE X Maths Introduction to Trigonometry

## geometricaly derive the value of sin 45

**amolshukal.2001**1st February 2018 9:28 PM

### CBSE X Maths Introduction to Trigonometry

## Sin square 5 plus sin square 10 plus....plus sin square 85 plus cos square 45

**Interfacesystems2**1st February 2018 9:33 PM

### ICSE X Maths Trigonometrical Identities

## Plz answer 1 part

**lovemaan5500**4th February 2018 5:37 PM

### ICSE X Maths Trigonometrical Identities

## Plz.answer 2nd part

**lovemaan5500**4th February 2018 5:38 PM

### ICSE X Maths

## Cos2A+tan2A-1/sin2A=tan2A

**vaibhav**5th February 2018 11:04 AM

### CBSE X Maths

## cotØ+tanø=7 find cot2ø+tan2ø???

**tluser1**6th February 2018 1:26 PM

### ICSE IX Maths

## 5 sin^2s+4 cos^2s=2/9, find tan s

**Swapan**14th February 2018 2:26 PM

### CBSE X Maths Introduction to Trigonometry

## state true or false please explain the answer

**gpnkumar0**15th February 2018 10:00 PM

### CBSE X Maths

## state true or false please explain the answer

**gpnkumar0**15th February 2018 10:01 PM

### CBSE X Maths Introduction to Trigonometry

## state true or false please explain the answer

**gpnkumar0**15th February 2018 10:02 PM

### ICSE X Maths Trigonometric Ratios of Complementary Angles

## If cosec theta . cos( theta + 54) = 1, find the value of theta so that theta and (theta + 54) are acute angles.

**bdroy_2014**16th February 2018 7:54 PM

### CBSE X Maths

## the angle of elevation of the top of a hill at the foot of a tower is 60 degree and the angle of elevation of the top of the tower from the foot of the hill is 30 degree. if the tower is 50 m high, what is the height of the hill?

**corpordann**19th February 2018 5:27 PM

### ICSE IX Maths Trigonometry

## In triangle ABC, AD is perpendicular to BC. Sin B = 0.8 , BD = 9 cm and tan C = 1. Find the length of AB , AD , AC and DC .

**sactalkmail**19th February 2018 6:45 PM

### ICSE IX Maths Trigonometry

## In the right angled triangle ABC,angle C=90 degrees and angle B=60 degrees.If AC=6cm,find the lengths of the sides BC and AB (Hint:Use the concept of trigonometry)

**laxmi.agarwal055**21st February 2018 7:17 PM

### ICSE IX Maths Trigonometry

## If the lengths of each side of a rhombus is 8cm and its one angle is 60 degrees,then fing the length of diagonals of rhombus (Hint:Use the concept of trigonometry)

**laxmi.agarwal055**21st February 2018 7:18 PM

### CBSE X Maths Introduction to Trigonometry

## cos58/sin32+sin22/cos68-cos38cosec52/tan18 tan35 tan60 tan72 tan55

**delphinjayaprakash**21st February 2018 8:09 PM

### ICSE X Maths

## (sin A - cos A +1)/ ( sin A + cosA -1)= 1/( sec A - tanA)

**bdroy_2014**24th February 2018 12:48 PM

### ICSE X Maths

## PROVE THAT: cot A + cosec A - 1/cot A - cosec A +1 = 1 + cos A/sinA

**nethra**24th February 2018 9:44 PM

### CBSE X Maths Introduction to Trigonometry

## In a right angle traingle right angled at A if tanC= then find sinBcosC+cosBsinC

**arvindsahadevadharwad**26th February 2018 2:16 PM

### CBSE X Maths Introduction to Trigonometry

## Please solve this .

**agarwalaayush**26th February 2018 6:37 PM

### CBSE X Maths Introduction to Trigonometry

## Sir/mam Please solve Question 21

**Vivek.d8765**27th February 2018 4:37 PM

### CBSE X Maths

## $In\u2206ABC,m\angle B=90\xb0,AB=7cmandAC-BC=1cm.Determinethevaluesof\mathrm{sin}Band\mathrm{cos}B.$

**sibaramamohanty**2nd March 2018 8:12 AM

### CBSE X Maths

## Prove that : sin^4A+cos^A/1-2sin^2 A*cos^2 A=1

**ihsanansar123**2nd March 2018 12:52 PM

### CBSE X Maths Introduction to Trigonometry

## If cosØ = √(4 – x2)/2 find the values of 1) secø.tanø 2) cosecø.cotø

**gpnkumar0**4th March 2018 8:40 PM

### CBSE X Maths

## Q5. A tunnel makes an angle of measure 30 with the ground. If we go 100 m in the tunnel, the vertical distance from the ground is covered x m, then .......... . x > 100 m x = 100 m x = 50 m x = 30 m

**shailesh.solanki**18th March 2018 1:43 PM

### CBSE X Maths Introduction to Trigonometry

## pls explain

**gpnkumar0**25th March 2018 10:00 PM

### CBSE X Maths Introduction to Trigonometry

## pls explain

**gpnkumar0**25th March 2018 10:01 PM

### CBSE X Maths Introduction to Trigonometry

## pls explain

**gpnkumar0**25th March 2018 10:02 PM

### ICSE X Maths

## Prove that cosAcotA/(1-sinA)=1+cosecA

**Sunita**31st March 2018 8:18 AM

### ICSE X Maths

## If secA+tanA=p Prove sinA=p^2-1/(p^2+1)

**Sunita**6th April 2018 7:46 PM

### ICSE X Maths

## Prove (SecA-cosecA)(1+tanA+cotA)=tanAsecA-cotAcosecA

**Sunita**6th April 2018 7:50 PM

### ICSE X Maths

## the upper part of a tree broken by wind,falls to the ground without being detached.the top of the broken part touches the ground at the angle of 38degree30min ata point6m from the foot of the tree calculate 1. the height at which the tree is broken.

**ipranjal01**17th April 2018 12:47 PM

### CBSE XII Science Maths

## Lim x->0 (tan x- sin x)/x^3=? Can you explain this question in shortcut way?

**Ravikumar**20th April 2018 9:30 PM

### CBSE X Maths Introduction to Trigonometry

## A+B = pi/2 and B+C =A. Find tanA

**acv27joy**23rd April 2018 6:13 AM

### CBSE X Maths

## If l sin ϴ + m cos ϴ + n = 0 and l’ sin ϴ + m’ cos ϴ + n’ = 0 Then prove that (mn’-m’n)² + (nl’ – ln’)² = (lm’-l’m)²

**CHIDAMBAR**23rd May 2018 7:00 PM

### ICSE X Maths

## Tan^2A+tan^2B=(sin^2A-sin^2B)/cos^2A-cos^2B Prove

**Sunita**3rd June 2018 2:09 PM

### ICSE XI Science Maths

## Prove that : Sec^6x-tan^6x= 1+3tan^2x+ 3tan^4x

**siddharthlathia0**10th June 2018 6:55 AM

### ICSE X Maths

## If cos A =4/5 find Sin A , Tan A , Cot A

**dhruvyup**13th June 2018 6:40 PM

### CBSE XI Science Maths

## Prove that : cot θ cot 2θ + cot 2θ cot 3θ + 2=cot θ (cot θ-cot 3θ )

**tps.mjmdr**16th June 2018 8:08 PM

### JEE Plances JEE (Main) Maths

## [Q.] 12 ( i )

**pukai7229**26th June 2018 9:39 PM

### JEE Plances JEE (Main) Maths

## HOW TO DO THIS SUM ON EQATION AND SOLUTION

**pukai7229**26th June 2018 9:40 PM

### CBSE X Maths

## Please solve this question

**vikasg13.hardware**30th June 2018 6:55 AM

### JEE Plances JEE (Main) Maths

## Solve it.

**sakshisingh3124**30th June 2018 9:35 PM

### JEE Plances JEE (Main) Maths

## Solve it.

**sakshisingh3124**30th June 2018 9:36 PM

### ICSE X Maths

## PROVE THAT SinØ—CosØ+1 / SinØ+CosØ—1 = 1/ secØ—TanØ

**siddharthjaiswal1122**1st July 2018 2:52 PM

### CBSE XI Science Maths

## Prove that: tan A + se A - 1/ tan A - sec A + 1= 1 + sin A/ cos A

**hariom2083**5th July 2018 12:18 AM

### CBSE XI Science Maths Trigonometric Functions

## in a right angled triangle the hypotenuse is 2root2 times the perpendicular drawn from the opposite vertex then then other acute angles of triangle are

**gargpuneet989**10th July 2018 6:28 PM

### CBSE XI Science Maths

## (cos x - cos y)^2 + (sin x - sin y)^2 = 4sin^2 (x-y)/2

**rtortechger.official**12th July 2018 7:36 PM

### ICSE X Maths

## Please solve - A balloon moving in a straight line passes vertically above two points “A" and "B" on a horizontal plan 1000 mt apart. When above “A” it has an altitude of 600 as seen from “B” and when above “B” it has an altitude of 450 as seen from “A”. Find the distance from “A” of the point at which it will touch the place when it comes down vertically.

**gkbsrr**16th July 2018 1:59 PM

### JEE Foundation X Maths

## ABC is a Triangular Park with ab is equal to AC is equal 200 m a clock tower situated at the midpoint of BC.The angles of elevation of the top of the tower at A and B are cot inverse 3.2 and cosec inverse 2.6 respectively. The height of the tower is

**mokshithreddy125**30th July 2018 7:33 PM

### ICSE IX Maths

## For an angle theta ,state the value of sin^2theta + cos^2theta

**prarenupall8070**30th July 2018 7:55 PM

### ICSE X Maths

## Chapter 21 trigonmetrical identities

**Ahman**3rd August 2018 11:41 AM

### CBSE XI Science Maths Straight Lines

## 17th?

**smanishkumar2002**4th August 2018 8:34 PM

### ICSE XI Science Maths

## If tan x=k , then find the value of

**SanskarAgarwal86**6th August 2018 10:25 PM

### CBSE X Maths

## cosec square theta ×1+cos theta×1-cos theta equal to x find the value of x

**dronsharma798**13th August 2018 10:15 PM

### CBSE XII Science Maths

## find dy/dx when x = a(cos thita + thita sin thita) y = a(sin thita – thita cos thita) explain in great detail

**haroonrashidgkp**15th August 2018 8:34 PM

### ICSE X Maths

## If I tan a +m sec a=n and q tan a +r seca =j then prove that:(nq-qn/mq-rl)^2=1+(jm-rn/mq-lr)^2

**kmondaldgms**16th August 2018 11:20 AM

### ICSE X Maths

## No. 1:if each of a,b andc is a positive acute angle such that sin(a+b-c)=1/2;cos (b+c-a)=1/2 and tan(c+a-b)=1;then find the values of a, band c. No.2:if a sec theta +b tan theta +c=0 and p sec theta +qtan theta +r =0 then prove that (br-qc)^2 -(pc-ar)^2=(aq-bp)^2 No. 3:sin^4 theta/a +cos^4 theta/b=1/a+b then prove that sin^8 theta/a^3 +cos^8 theta/b^3+1/(a+b)^3 NO.4: If sin x +sin^2 x=1 then find the value of cos^8 x +2cos^6 x+cos^4 x (INDEX;^2 : means to the power of)

**kmondaldgms**16th August 2018 11:37 AM

### ICSE X Maths

## 1 Simplify: (tan x +sec x-1)/ (tan x -secx +1)
2 PROVE THAT: cos6x=32cos^6 x-48cos^4 x +18cos^2 x -1
3 (pi=180 degrees)
if tan x=3/4 ,pi

**keshavendu35**16th August 2018 11:58 AM

### ICSE X Maths

## plz. match the following showing the steps that is by showing steps plz. answer fast tomorrow is maths exam

**keshavendu35**16th August 2018 12:21 PM

### ICSE X Maths

## If a and b are acute angles such that tan a =1/2,tan b=1/3 and tan(a+b)=tan a +tan b/1-tana*tanb then find tan(a+b)

**kmondaldgms**17th August 2018 12:03 AM

### ICSE X Maths

## if a sec theta +b tan theta +c=0 and p sec theta +qtan theta +r =0 then prove that (br-qc)^2 -(pc-ar)^2=(aq-bp)^2

**kmondaldgms**17th August 2018 12:04 AM

### ICSE X Maths

## If sin x +sin^2 x=1 then find the value of cos^8 x +2cos^6 x+cos^4 x (INDEX;^2 : means to the power of)

**keshavendu35**17th August 2018 12:08 AM

### ICSE X Maths

## PROVE THAT: cos6x=32cos^6 x-48cos^4 x +18cos^2 x -1

**keshavendu35**17th August 2018 12:09 AM

### ICSE X Maths

## if cosec^2 theta = 4xy/(x+y)^2; then find the relation between x and y

**kmondaldgms**19th August 2018 12:26 AM

### JEE Plances JEE (Main) Maths

## Is cos(|sin x|÷x) not defined at x=0?

**jaychandran1967**21st August 2018 6:20 PM

### CBSE XI Science Maths

## tanA+tanB+tanC=6 cotA+cotB+cotC=?

**dineshchem108**23rd August 2018 10:01 PM

### ICSE X Maths

## Please tell me

**siddharthjaiswal1122**25th August 2018 6:32 PM

### CBSE XII Science Maths

## If y = ex sin x , prove that d2y/dx2 – 2 dy/dx + 2y = 0 Explain in great detail

**haroonrashidgkp**25th August 2018 7:07 PM

### CBSE XII Science Maths

## If y = sin x and x changes from pie/2 to 22/14, what is the approximate change in y ? Explain in great detail

**haroonrashidgkp**22nd September 2018 3:58 PM

### ICSE X Maths

## If A and B are complementary angles,prove that: (1)cotB + cosB =secA cosB (1 + sinB) (2)cotAcotB - sinAcosB - cosAsinB =0

**gautamkr517**23rd September 2018 9:03 PM

### CBSE X Maths

## Will I get marks if I shifted the terms cosec^2 theta and cot^2theta in the below mentioned question?👇

**guptaabhinav0809**25th September 2018 8:41 PM

### CBSE IX Maths

## ca you say the answer for my holiday assignment .i can't find the answer can someone help me trignomentry-uses ratios ,special anglesand identities

**SriVaishnavi**26th September 2018 9:38 PM

### CBSE IX Maths

## can you say the answer for my holiday assignment .i can't find the answer can someone help me trignomentry-uses ratios ,special angles and identities

**SriVaishnavi**2nd October 2018 9:30 AM

### CBSE X Maths

## cosA - sinA+1/ cosA+sinA-1 = cosecA+ cotA Solve the above.

**roysubarna2016**2nd October 2018 11:27 AM

### CBSE X

## (sin70 + cos20)(sec70 + cosec20) (tan70 – cot20)

**amruta.p.1978**3rd October 2018 11:10 PM

### ICSE IX Maths

## Please prove this question.

**Mohammed**12th October 2018 10:30 AM

### ICSE X Maths Height and Distance

## a man on the bank of a stream observes a tree on the opposite bank exactly across the stream he finds the angle of elevation of the top of the tree to be 45. on receding perpendicularly a distance of 4m from the bank, he finds that the angle of elevation reduces by 15 .is this information sufficient for the man to determine the height of the tree and the width of the stream? if so, find them. heights and distance

**triptisrivastava2002**14th October 2018 3:26 PM

### ICSE X Maths Trigonometrical Identities

## prove that if secA +tanA =a ,then prove that a^2-1/a^2+1=sinA

**Gopalsagar6176**15th October 2018 12:49 PM

### CBSE XI Commerce Maths

## what are the easiest ways to solve trigo questions

**hembiyani**18th October 2018 11:57 AM

### CBSE X Maths Introduction to Trigonometry

## Page 377 Ex 6 If ∠A and ∠B are acute angles such that cosA=cosB, then show that ∠A = ∠ B.

**miniprasad**23rd October 2018 9:53 PM

### CBSE X Maths Introduction to Trigonometry

## Page 406 Qst : 30 Cos θ + cos θ = 2 Cosec +1 cosec - 1

**miniprasad**23rd October 2018 9:57 PM

### CBSE X Maths Introduction to Trigonometry

## Page 410 Qstn 31 Cos4 θ – sin4θ =

**miniprasad**23rd October 2018 9:58 PM

### ICSE X Maths

## Prove that (tanA+secA) - (secA+tanA)(secA-tanA) = (tanA+secA)(1-secA+tanA)

**sunilvakkat**25th October 2018 2:47 PM

### CBSE XI Science Maths Trigonometric Functions

## Solve for x 3tanx + cotx = 5cosecx

**dssinghania1234**27th October 2018 10:20 AM

### ICSE IX Maths

## Tan18.tan23.cosec square 45.tan67.tan72 evaluate

**Savipramod**29th October 2018 12:46 AM

### CBSE X Maths

## SecA-1/secA+1=1-cosA/1+cosA Prove

**Kshipra.nks**1st November 2018 6:16 AM

### ICSE X Maths

## (sinA+secA)sq. +(cosA+cosecA)sq. =(1+secAcosecA)sq.

**jaiswalsindhuli717**7th November 2018 10:23 AM

### ICSE X Maths Trigonometrical Identities

## prove:(sinø+secø)2+(cosø+cosecø)2=(1+secø.cosecø)

**praveen.ujjwal**12th November 2018 9:15 PM

### CBSE X Maths Introduction to Trigonometry

**Gounshi**14th November 2018 4:02 PM

### CBSE X Maths

## Evaluate the term cosec .

**chorghadeshekhar**18th November 2018 8:28 PM

### CBSE X Maths Introduction to Trigonometry

## Find all trigonometric ratio for the angle 30 geometrically.

**guptaabhinav0809**19th November 2018 10:33 PM

### CBSE XI Science Maths

## If p and q are two non zero unequal real numbers show that sin theta can never be equal to p2+q2/2pq

**rushabh1234**20th November 2018 11:22 AM

### CBSE XI Science Maths

## If a and b are two non zero unequal real numbers show that sec theta= 2rootab/a+b is impossible

**rushabh1234**20th November 2018 11:24 AM

### ICSE X Maths

## Prove that c ot^2A -cos ^2A =cos ^2A ×cot ^2A

**dantkalesamarth**22nd November 2018 10:02 PM

### ICSE IX Maths

## If Tan theta is root2 -1, then prove that sin theta.cos theta = 1/2 root 2

**prashanth.rajappa**16th December 2018 11:16 PM

### CBSE X Maths

## Q27. If sec ϴ + tan ϴ = x, show that sin ϴ = I haven't understand the solution of this question.Will u please explain me

**shivkant.928**21st December 2018 11:19 PM

### ICSE X Maths

## Sin35°sin55°-cos35°cos55°

**devika.selokar1987**1st January 2019 10:56 PM

### ICSE X Maths

## If sin A-cosA= then find the value of the following.

a) sinA.cosA b) sinA + cosA

**sunilkumar08031999**3rd January 2019 9:39 PM

### CBSE X Maths Introduction to Trigonometry

## tan1*tan2*tan3*.........tan89*=1

**singhtaran652**7th January 2019 6:31 PM

### ICSE X Maths Trigonometric Ratios of Complementary Angles

## tan 30

**ishaansansare28**13th January 2019 3:54 PM

### CBSE X Maths

## tan1 tan2 tan3 ............tan89=1 what is the probability that a leap year selected at random will have 53 sundays

**sanjaysahu675**16th January 2019 10:41 PM

### CBSE X Maths Introduction to Trigonometry

## tan1 tan2 tan3 ............tan89=1 what is the probability that a leap year selected at random will have 53 sundays if the polynomial x^4-6x^3+16x^2-26x+10 is divided by another polynomial x^2-2x+k gives reminder x+a . then find a and k.

**sanjaysahu675**16th January 2019 10:49 PM

### CBSE X Maths

## prove tan +tan(90-theta)=secthetasec(90-theta

**tsanjay7585**21st January 2019 9:30 PM

### CBSE X Maths Introduction to Trigonometry

## sinA/cosA=?

**pinkyv507**23rd January 2019 10:37 PM

### CBSE X Maths Introduction to Trigonometry

## explain this question step wise

**ABHILASHA**2nd February 2019 9:04 AM

### CBSE X Maths Introduction to Trigonometry

## answer of this question wid step wise explanation.

**ABHILASHA**2nd February 2019 9:08 AM

### CBSE X Maths Introduction to Trigonometry

## pt

**mskjoshi**2nd February 2019 3:18 PM

### ICSE X Maths Trigonometric Identities

## sec2a + cosec2a=sec2COSEC2A

**raghuvatsa2710**2nd February 2019 9:21 PM

### CBSE X Maths Introduction to Trigonometry

## If sinA = CosA , then find the value of 2tanA + cos2A

**Kumarashish6345**5th February 2019 8:13 AM

### CBSE X Maths Introduction to Trigonometry

## tan theta plus sec theta minus one /tan theta minus sec theta pluc one =1 + cos theta / cos theta

**jha.physio.naresh365**8th February 2019 8:47 PM

### CBSE X Maths Introduction to Trigonometry

## Please explain attached question.

**JSN_FRANCIS**9th February 2019 6:07 AM

### CBSE X Maths Introduction to Trigonometry

## How to evaluate without tables?

**malaysaha.80**9th February 2019 11:38 AM

### CBSE X Maths Introduction to Trigonometry

## If tan A=4/8.Find cosA+sinA

**patelkrish486**9th February 2019 10:09 PM

### CBSE X Maths Introduction to Trigonometry

## If sinA+sin^2+sin^3=1 prove that cos^6A-4cos^4A+8cos^2A=4 Please answer in a simpler way than the book

**guptaabhinav0809**10th February 2019 11:47 PM

### ICSE X Maths Trigonometric Identities

## tansquareA-tansquraB= sinsqureA-sinsquareB/cossquareA-cossquareB

**m_shailander**17th February 2019 3:14 PM

### CBSE X Maths Some Applications of Trigonometry

## The angle of elevation of stationary cloud from a point 25 cm above the lake is 30°and the angle of depression of its reflection in the lake 60° what is the height of the cloud above that lake level.

**asumangalashetty**18th February 2019 7:49 AM

### CBSE X Maths Introduction to Trigonometry

## Sin a + cos a + 1/ sin a + cos a - 1 = 1/ sin a - tan a

**adityaagrawal020503**21st February 2019 11:30 PM

### CBSE X Maths Introduction to Trigonometry

## If 3 sin A + 5 cos A = 5, prove that (5 sin A - 3 cos A) = +-3

**Kumarashish6345**22nd February 2019 8:57 AM

### CBSE X Maths

## if sin =x and sec theta =y then find the value of cot theta

**chintalarakeshyadav**23rd February 2019 1:21 PM

### ICSE IX Maths

## In the given figure, angle B=90 degree, AB = 4 units and BC = 3 units find sin A

**mdmujtabaqureshi1**23rd February 2019 2:07 PM

### CBSE X Maths

## Given 15 cot A = 8, find sin A and sec A

**razzi1**28th February 2019 12:35 AM

### CBSE X Maths

## If sec A + tan A = p , then find cosec A.

**Abel**3rd March 2019 2:48 PM

### CBSE X Maths Introduction to Trigonometry

## What is the value of (cos267° - sin23°)?

**mail2sanjayprasad**5th March 2019 7:03 PM

### CBSE X Maths Introduction to Trigonometry

## Evaluate (cos²67°-sin²3°)

**shivanshuranjeet**5th March 2019 8:58 PM

### CBSE X Maths Introduction to Trigonometry

## plzz solve this....as soon as possible..mam/sir

**ABHILASHA**5th March 2019 11:16 PM

### CBSE X Maths Introduction to Trigonometry

## solution for this

**ABHILASHA**5th March 2019 11:18 PM

### CBSE X Maths Introduction to Trigonometry

## solution required as early as possible...

**ABHILASHA**5th March 2019 11:20 PM

### ICSE X Maths

## Evaluate sin 30 +cos 270/tan 90

**sheshmani**6th March 2019 8:48 PM

### CBSE X Maths

## if tan(a+b)=1 and tan(a-b)=1/root 3 find the values of a and b

**poshi.mails**7th March 2019 7:42 PM

### CBSE X Maths

## In triangle abc angle b=90 bc+ab=17cm bc-ab=7cm find sin a cos c

**Shaikmustafa**13th March 2019 4:15 PM

### CBSE X Maths

## cos (3A-40°)=sin80°. Then value of A

**sumandevi54757**24th March 2019 4:00 PM

### ICSE X Maths Trigonometric Identities

## How can I solve trigonometry

**junaidquerashi831**1st April 2019 1:49 PM

### CBSE X Maths

## In fig 8.13,find tan P-cotR.

**Rprishavpal1234**3rd April 2019 2:33 PM

### ICSE X Maths Trigonometric Ratios of Complementary Angles

## tan A + sec A -1 / tan A - sec A +1 = 1+ sinA / cos A

**heermurjani**5th April 2019 4:32 PM

### ICSE X Maths Trigonometric Identities

## Tan²A—Tan²B=(sin²A—sin²B) ÷cos²A×cos²B

**Mmanjima7**25th April 2019 12:11 PM

### CBSE X Maths Introduction to Trigonometry

## If sin A =1/2, then find the other trigonometric ratios

**Mudabbir690**30th April 2019 11:51 PM

### CBSE XI Science Maths Trigonometric Functions

## What is trigonometry

**Singhnitish1475**11th May 2019 1:46 AM

### JEE Main Maths Trigonometry

## The angle of elevation of the top of a vertical tower from a point A, due east of it is 45°. The angle of elevation of the top of the same tower from a point B, due south of A is 30°. If the distance between A and B is 54√2 m , then the height of the tower (in metres), is : a) 36/√3 b) 54 c) 54/√3 d) 108

**Ranjeetgupta26068**16th May 2019 12:11 AM

### ICSE VIII Maths

## If cosA = ncosB and sinA = msinB then show that (m^2-n^2)sin^2B =1-n^2

**venkat.gunuganti**19th May 2019 11:55 AM

### CBSE XI Science Maths Trigonometric Functions

## Cot 4x (sin5x + sin3x)= cot x (sin5x - sin3x)

**Iamanish2003**20th May 2019 2:12 PM

### CBSE XI Science Maths Trigonometric Functions

## If f(x)=2(7cosx+24sinx)(7sinx-24cosx), then find the maximum value of (f(x))^1/4

**aahnik.mohanty**22nd May 2019 9:59 PM

### NEET NEET Physics

## Table of sin, cos, tan theta?

**harinderamit1234**25th May 2019 9:16 PM

### CBSE X Maths Introduction to Trigonometry

## Find the value of sin 31π/3

**Shikhasaxena523**27th May 2019 3:39 PM

### ICSE IX Maths Trigonometry

## If 2sin (A+B)-1=0 and 2sin (A-B)-3=0

Find A and B

**abhiraj.abhinav39**31st May 2019 5:23 PM

### CBSE X Maths Some Applications of Trigonometry

**regeliscus987**1st June 2019 1:59 PM

### CBSE XI Science Maths Trigonometric Functions

## Pls solve.

**pb_ckt**12th June 2019 2:48 PM

### CBSE XI Science Maths Trigonometric Functions

## pls solve

**pb_ckt**14th June 2019 11:19 PM

### CBSE XI Science Maths Trigonometric Functions

## pls solve

**pb_ckt**14th June 2019 11:20 PM

### CBSE XII Science Maths Inverse Trigonometric Functions

## If y^x = e^(y-x) then prove dy/dx = (1+logy)^2/logy

**ranaakshat345**17th June 2019 1:28 PM

### ICSE IX Maths Trigonometry

## Tan2 30°+tan2 45°+tan2 60°

**Likithavenk**18th June 2019 9:36 PM

### CBSE XI Commerce Maths

## sinx + sin3x/cosx -con3x = cotx

**sanjeevnayan3**23rd June 2019 12:55 PM

### CBSE XI Science Maths Trigonometric Functions

## sinx=1/2 then find the value of cosx

**md.ameenkhan9292**29th June 2019 6:07 PM

### CBSE XI Science Maths Trigonometric Functions

## 2 tan B + cot B = tan A , show that 2 tan(A-B) = cot B

**agarwalharsh8476**6th August 2019 8:32 PM

### CBSE X Maths Introduction to Trigonometry

## Sin(A-B)=sinAcosB-cosAsinB

**Arunthakur**12th August 2019 5:45 AM

### CBSE X Maths Introduction to Trigonometry

## Tan square A/tan square A-1+Cosec square A/sec square A-Cosec square A=1/1-2 cos square A

**bindu_jayk**15th August 2019 11:45 AM

### CBSE XI Science Maths Trigonometric Functions

## Trigonmetric

**Ratanswain752**16th August 2019 9:14 PM

### CBSE X Maths Introduction to Trigonometry

## Sec 41 Sin 49 Cosec 41-Tan 20 Tan 60 Tan 70-

**adalroshan2464**20th August 2019 4:31 PM

### CBSE X Maths Some Applications of Trigonometry

## A 1.6m tall girl stands at a distance of 3.2m from a lampost and casts a shadow of 4.8m on the ground. Find the height of the lampost by using(1)trigonometric ratios(2)property of similar triangles.

**dr.geetanjali.p**2nd September 2019 11:29 AM

### CBSE XI Science Maths Trigonometric Functions

## plzz explain how to solve it with the solution

**ABHILASHA**7th September 2019 3:14 PM

### CBSE X Maths Introduction to Trigonometry

## Cos a=12/3 then find sin a tan a sec a

**bollamramesh98**26th September 2019 8:52 PM

### CBSE X Maths Introduction to Trigonometry

## Prove that : 1-sinA/1+sinA=(secA-tanA)2

**giridipak451**4th October 2019 10:01 PM

### JEE Main Maths Trigonometry

## What is the value of sec 333º × (sec^2 333º - 1)^½?

**rishabhsankla1**13th November 2019 12:29 AM

### JEE Main Maths Trigonometry

## If f(θ) = sin2 θ + sin2 (θ+2π/3) + sin2 (θ+4π/3), then what will be f(π/10)?

**rishabhsankla1**26th November 2019 8:20 PM

### ICSE IX Maths Trigonometry

## CosA=0.5 /cosB=1/√2 find value of TanA-TanB /1+TanATanB

**ashwinipandey7355**3rd December 2019 11:01 PM

### CBSE X Maths Introduction to Trigonometry

## f x = a cos theta -b sin theta and y = a sin theta + b cos theta then prove that a square+b square = x square+y square

**melmerisb**7th December 2019 12:38 AM

### ICSE IX Maths Trigonometry

## 2cos²Ø+sinØ-2=0 find value of Ø

**gogobarcasajal**7th December 2019 11:00 AM

### CBSE X Maths Introduction to Trigonometry

## If A and B are acute in right angled ABC, then sin2 A + sin2 B =

**preetisonips22**4th January 2020 5:44 PM

### CBSE X Maths Introduction to Trigonometry

## Prove that tan13A - TAN 9A- TAN4A= TAN 13A•TAN9A•TAN4A

**amankumarj7371**9th January 2020 9:04 PM

### CBSE X Maths Introduction to Trigonometry

## Given sec Ø =13/12 calculate all other trigonometric ratios...

**chpratik11**10th January 2020 3:53 PM

### CBSE X Maths Introduction to Trigonometry

## if sinA +cosA =√3, then prove that tanA +cotA =1

**singh.dh**12th January 2020 10:42 PM

### CBSE X Maths Introduction to Trigonometry

## Evaluate cos48°cos42°–sin48°sin42°

**Maharanam446**22nd January 2020 1:21 PM

### CBSE X Maths Introduction to Trigonometry

## Evaluate sin 30°+ tan45°-cosec60°/sec30°+cos60°+cot45°

**ashleshathakur124**10th February 2020 9:39 PM

### CBSE X Maths Introduction to Trigonometry

## (cos a /1+sin a)+(cos a /1-sin a)=4

**dwivedipooja1983**10th February 2020 10:05 PM

### JEE Main Maths Trigonometry

## Tan a=4/3; cos (a+b)= - √5/5 ; find the value of tan (a - b) .

**saikatsukai514**17th April 2020 7:41 AM

### JEE Main Maths Trigonometry

## Let x, y, z be real numbers with such that x+y+z= and P = cosx.siny.cosz. then what are the minimum and maximum values of P? Also mention at what values of x,y,z they occur?

**sarn1027**5th May 2020 2:44 PM

### CBSE X Maths Introduction to Trigonometry

## Proove that (CotA+CosecA-1)/(CotA-CosecA+1) = (1+CosA)/SinA

**kssvsv2011**9th May 2020 8:44 PM

### CBSE X Maths Introduction to Trigonometry

## if sin a =3/5,find cos a and tan a

**Battulasirichanda**16th May 2020 3:21 PM

### ICSE IX Maths Trigonometry

## tan30.sec45+tan60.sec30

**shubhaarya25**17th May 2020 4:04 PM

### ICSE IX Maths Trigonometry

## tan60/sin60+cos30

**shubhaarya25**18th May 2020 11:06 AM

### ICSE X Maths Trigonometrical Identities

## 1+tanA/sinA + 1+cotA/cosA

**edoc008**31st May 2020 8:00 PM

### CBSE X Maths Introduction to Trigonometry

## mathematics

**coolbhavanakothari08**2nd June 2020 8:58 PM

### CBSE X Maths Introduction to Trigonometry

## If a and b are acute angles such that tan a=1/3 tan b = 1/2 and tan A+B = 45

**ommkardas2004**9th June 2020 5:54 AM

### ICSE X Maths Trigonometrical Identities

## cotA+cosecA-1/cotA-cosecA+1=1+cosA/sinA.prove it.

**engtalukdardubey**9th June 2020 5:32 PM

### CBSE X Maths Introduction to Trigonometry

## Tan theta =11 then find other t- ratios

**ommkardas2004**13th June 2020 10:06 AM

### CBSE X Maths Introduction to Trigonometry

## prove that sec A(1- sin A) (secA+ tan A) = 1

**pandeydivyanshu42**19th June 2020 12:52 PM

### ICSE IX Maths Trigonometry

## if 3cos A = 4sinA, find 4cos²A-3sin²A+2

**ambikaradhika582**22nd June 2020 3:56 PM

### CBSE XII Science Physics

## A vertical lamp-post of height 9 metres stands at the corner of a rectangular field. The angle of elevation of its top from the farthest corner is ,while from another corner it is . The area of the field isA vertical lamp-post of height 9 metres stands at the corner of a rectangular field. The angle of elevation of its top from the farthest corner is ,while from another corner it is . The area of the field is

**bhartiankita2002**4th July 2020 12:22 PM

### CBSE X Maths Introduction to Trigonometry

## abcd is a quadilateral prove that cos a+b / 4 = sin c+d /4

**harishankarpandabrl**9th July 2020 3:37 PM

### ICSE X Maths Trigonometric Identities

## prove that: 1+cosecA+cotA=2/1+tanA-secA

**saumitachaudhuri120**17th July 2020 8:41 PM

### ICSE X Maths Trigonometrical Identities

## Question 6th

**shivanisethi255**18th July 2020 5:30 PM

### CBSE XI Science Maths Trigonometric Functions

## trigonometry ka question hai please solve

**jaiswalpiyush040**20th July 2020 8:22 AM

### CBSE XI Science Maths Trigonometric Functions

## clear my doubt

**kandukuriPraneeth16**25th July 2020 6:18 PM

### CBSE XI Science Maths Trigonometric Functions

## Cos5π/4-sin5π/4+tan11π/4-cot11π/4? SIn4530°? Cos (-9π/4)? Sin 120°cos 150°-cos240°sin330°? If tan35°=k then,Tan145°-Tan125°/1+Tan145°.Tan125°?

**Pallapothu.a**5th August 2020 4:13 PM

### CBSE XII Science Maths

## need answer for 12 question

**vhymag**7th August 2020 7:12 AM

### CBSE XI Science Maths Trigonometric Functions

## Q10

**omved0304**7th August 2020 11:24 AM

### ICSE XI Science Maths

## Evaluate : (cos3x-2cos4x)/(sin3x+2sin4x)

**shreyasrivastavaprayag**13th August 2020 11:06 PM

### CBSE XII Science Maths

## cos¯¹[cos(680°)]

**harsharyan363**15th August 2020 3:07 PM

### ICSE X Maths Trigonometrical Identities

## 1st question please solve it !

**shahbaaz.rocking**17th August 2020 5:29 PM

### CBSE X Maths Introduction to Trigonometry

## question

**arindeep.singh**20th August 2020 6:56 PM

### CBSE X Maths Introduction to Trigonometry

## if cos (40°-X)=30sin find the value of X

**lavanyasureshkumar**24th August 2020 4:02 PM

### CBSE XI Science Maths Trigonometric Functions

## pls clear the doubt, dear sir/ madam

**sachitshanchinal**2nd September 2020 2:53 PM

### CBSE XI Science Maths Trigonometric Functions

## if sintita +costita =1/5 and 0≤thita

**sravikakanneganti**19th September 2020 5:26 PM

### CBSE XI Science Maths Trigonometric Functions

## Prove that 2sin^2 y + 4cos(x + y) sinxsiny ny + cos 2 * (x + y) = cos 2x

**apnp31**21st September 2020 12:19 PM

### CBSE X Maths Introduction to Trigonometry

## Show that … cosec theta minus 2sin cube theta upon 2cos cube theta minus cos theta is equals to tan theta

**pramoddomarp121**26th September 2020 6:01 PM

### CBSE XII Commerce Maths

## If f(x) = sinx +sin? (x + 7/3) + cos2.cos (x + (x+5) and g(5/4) = 1, then (gof)(x) =

**adithyavardhansudagoni2004**27th September 2020 11:08 AM

### ICSE IX Maths Trigonometry

## If cos A + sec A = 2, find value of cos2 A + sec2 A.

**natashagupta50.9spicertl**30th September 2020 3:41 PM

### ICSE X Maths Trigonometrical Identities

## find x if :- sin 47 sec 43 +cos43 cosec 47- cos square 45 ° =0

**4321sandeep**16th October 2020 12:40 PM

### ICSE IX Maths Trigonometry

## Sin A + cosec A = 2

**anufancy1**16th October 2020 10:24 PM

### CBSE XI Science Maths

## 2 sin 67 1/2° cos22 1/2°= ?

**sahookishorechandra967**17th October 2020 7:46 AM

### ICSE IX Maths Trigonometry

## please give me the answer of attached question

**aryan2mumbai**22nd October 2020 8:22 AM

### ICSE X Maths Trigonometrical Identities

## cot2 A - cos2 A = cot2 A × cos2 A

**akbarreshma123**24th October 2020 8:35 PM

### ICSE X Maths Trigonometrical Identities

## tan2-sin2=tan2.sin2

**afaizaali293**25th October 2020 11:39 AM

### CBSE X Maths Introduction to Trigonometry

## question number 32

**fk0391851**22nd December 2020 11:10 AM

### ICSE IX Maths Trigonometry

## if CosA+secA= 2, find the value of cosA2 and secA2

**priyapal1106**11th February 2021 8:01 PM

### ICSE X Maths Trigonometrical Identities

## (sin A+ cos A) (sec A+ cosec A) = 2+sec A.cosec A

**kotharianaiya9**6th March 2021 12:15 PM

### ICSE IX Maths Trigonometry

## (tan 60 + 1 / tan 60 - 1 )^2 = 1 + cos 30 / 1 - cos 30

**indirasolanki5661.9sdatl**8th March 2021 7:37 PM

### CBSE XII Science Maths

## find the number of solutions of the equation 6cosec²theta-5cosecthetha+1=0

**rakeshpandey020280**17th March 2021 7:06 PM

### CBSE X Maths Introduction to Trigonometry

## SHOW THAT cos 38°cos 52°- sin 38°sin 52° =0

**debasreepartha**23rd April 2021 8:38 AM

### CBSE X Maths Introduction to Trigonometry

## sin teta + 2cos teta =1 prove that 2sin teta - cos teta =2

**manish.mayuka**2nd May 2021 2:02 PM

### CBSE X Maths Introduction to Trigonometry

## evaluate cos150

**rutujaindulkar6**4th May 2021 10:19 AM

### ICSE X Maths Trigonometrical Identities

## prove that

**kirtigaur935**9th May 2021 12:29 PM

### JEE Main Maths Trigonometry

## plese solve it in detail with step by step explanation

**ashwinbalaaji30**18th May 2021 10:51 AM

### CBSE X Maths Introduction to Trigonometry

## In ∆abc , Lb= 90 and tanA = 1/√3 . Find sinA cosC + cosA since

**Dhruv**5th July 2021 4:12 PM

### JEE Main Maths Trigonometry

## tan tita+sec tita -1/tan tita-sec tita+1

**gopuradhika1128**28th July 2021 8:45 PM

### JEE Main Maths Trigonometry

## let f(theta)=[1+(4sintheta/sin6theta)] [1+(4sin2theta/sin5theta)]

**digbijaybehera008**15th September 2021 9:15 AM

### CBSE X Maths Introduction to Trigonometry

## prove that 1+sina-cosa/1+sina+cosa=√1-cos/√1+cosa

**ambarishpatil7**28th September 2021 8:49 PM

### CBSE X Maths Some Applications of Trigonometry

## In triangle ABC, AD is perpendicular to BC, angles B and C are of measures 30 and 60 respectively, if AD=7m, then find the value og BC.

**godboletanaya**24th December 2021 11:08 AM

### CBSE X Maths Introduction to Trigonometry

## tanA =cotB find A+B=?

**ankitakulhar075**3rd April 2022 8:43 PM

### CBSE X Maths Introduction to Trigonometry

## evaluate sin 45°+ cos 45°?

**prathibhakethavath2**3rd May 2022 6:53 PM

### JEE Main Maths Trigonometry

## cos x=-1/2,x lies in which quadrant

**antarshekhawat18**25th May 2022 10:32 AM

### CBSE X Maths Introduction to Trigonometry

## write all the other trigonometric ratios of angle a in terms of cosecant a

**padmajabchannammanavar**8th June 2022 7:28 AM

### ICSE X Maths Trigonometric Identities

## Please help me to solve the question.

**rashikulkarni28**8th June 2022 2:47 PM

### ICSE X Maths Trigonometric Identities

## Please help me to solve the question

**rashikulkarni28**8th June 2022 2:51 PM

### JEE Main Maths Trigonometry

## what is tan45+cot55

**bhavanakookatla1986**27th June 2022 10:36 AM

### NEET NEET Physics Kinematics

## If tantita- √5\2 then value of cos tita is

**razaqasmi87**29th June 2022 9:36 PM