### CBSE X Mathematics Introduction to Trigonometry

## Prove that : cotA + cosecA - 1/cotA-cosecA+1 = 1+cosA / sinA

### CBSE XI Science Mathematics Trigonometric Functions

## Q.prove that
tan x + 2 tan 2x+ 4 tan 4x + 8 cot 8x =cot x

**imabhi264**24th May 2017 12:03 PM

### JEE Plances JEE (Main) Mathematics Trigonometric Ratios, Identities and Equations

## Q21 pls

**Tanishq**25th October 2017 5:27 PM

### JEE Plances JEE (Main) Mathematics Solutions of Triangle

## Q1 pls

**Tanishq**27th October 2017 10:00 AM

### JEE Plances JEE (Main) Mathematics Solutions of Triangle

## Q2

**Tanishq**28th October 2017 10:17 AM

### JEE Plances JEE (Main) Mathematics Solutions of Triangle

## Q4 pls

**Tanishq**28th October 2017 10:20 AM

### JEE Plances JEE (Main) Mathematics Solutions of Triangle

## Q5 pls

**Tanishq**28th October 2017 10:26 AM

### CBSE XI Science Mathematics Trigonometric Functions

## Solve Sin(2x) > (Cosx)^2

**sudhanshubhushanroy**15th November 2017 8:28 PM

### CBSE XI Science Mathematics Trigonometric Functions

## Solve
Sin(2x) > Squart(2)*Sinx^2 + ( 2 - Squart2 )*Cosx^2

**sudhanshubhushanroy**15th November 2017 8:42 PM

### CBSE XI Science Mathematics Trigonometric Functions

## No idea for starting the following question..

**nitishkrnehu09**23rd November 2017 9:43 AM

### JEE Plances ALL Class Mathematics Trigonometric Ratios, Identities and Equations

## 17

**rbhatt16**7th December 2017 8:48 PM

### CBSE XI Science Mathematics Trigonometric Functions

## Solve:

**nitishkrnehu09**10th December 2017 10:33 PM

### JEE Plances ALL Class Mathematics Trigonometric Ratios, Identities and Equations

## ques 9

**rbhatt16**11th December 2017 8:38 PM

### JEE Plances ALL Class Physics Sound Waves

## Find the time period of following

**venkat**12th December 2017 2:31 PM

### JEE Plances ALL Class Physics Sound Waves

## Find the time period of following

**venkat**12th December 2017 2:33 PM

### JEE Plances ALL Class Mathematics Trigonometric Ratios, Identities and Equations

## ques 16

**rbhatt16**12th December 2017 4:21 PM

### CBSE XI Science Mathematics Permutations and Combinations

## The question is attached. Please send the step by step complete solution. I also request that please don't send any weblink to this question because I am unable to open thelink everytime.

**sudhanshubhushanroy**12th December 2017 8:22 PM

### CBSE XII Science Mathematics Inverse Trigonometric Functions

## The question is attached above. Please send step by step complete solution. I also request you please do not send any web link to this question because I am unable to open the link every time .

**sudhanshubhushanroy**14th December 2017 6:49 AM

### CBSE XI Science Mathematics Trigonometric Functions

## The question is attached above. Please send step by step complete solution. I also request you please do not send any web link to this question because I am unable to open the link every time .

**sudhanshubhushanroy**14th December 2017 6:51 AM

### CBSE XI Science Mathematics Trigonometric Functions

## The question is attached above. Please send step by step complete solution. I also request you please do not send any web link to this question because I am unable to open the link every time .

**sudhanshubhushanroy**14th December 2017 6:52 AM

### CBSE ALL Class Mathematics

## A,B and C are acute angles of triangle ABC. Prove tan(A+B)/2=cot C/2

**subhasray1968**21st December 2017 9:59 PM

### CBSE X Mathematics Introduction to Trigonometry

## If tan A = 5/6 and tan B = 1/11 , Then (A+B) =?
- pie/2
- pie/4
- 3pie/2
- nome of these

- pie/2
- pie/4
- 3pie/2
- nome of these

**sucharitasahoo1**26th December 2017 6:18 PM

### CBSE XI Commerce Mathematics

## Sin2x+sin4x+sin6x=0

**Chirag**2nd January 2018 12:34 PM

### CBSE XI Science Mathematics Trigonometric Functions

## please help in this

**nitishkrnehu09**7th February 2018 9:52 PM

### CBSE XI Science Mathematics Trigonometric Functions

## tanA = x/x+1 and tanB = x/2x+1 Find A + B

**acv27joy**20th April 2018 2:53 PM

### JEE Plances JEE (Main) Mathematics

## Q-1 if x+y+z=pi/2 show that sin2x+sin2y+sin2z=4cosxcosycosz

**napaliwal**10th May 2018 7:53 AM

### JEE Plances JEE (Main) Mathematics

## can someone please solve!

**pukai7229**16th May 2018 9:25 AM

### CBSE XI Science Mathematics Trigonometric Functions

## Prove the identity

**Anish**16th June 2018 3:25 PM

### CBSE XI Science Mathematics Trigonometric Functions

## (1+cosπ/8)(1+cos3π/8)(1+cos5π/8)(1+cos7π/8)=1/8

**rajkumarpandey3783**6th July 2018 9:02 PM

### JEE Plances JEE (Main) Mathematics

## Prove that

**Anish**9th July 2018 1:08 PM

### CBSE XI Science Mathematics 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 XII Science Mathematics

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

**haroonrashidgkp**15th August 2018 8:32 PM

### ICSE X Mathematics

## 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 Mathematics

## 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 Mathematics

## prove that:5 cos theta +3 cos (theta+60(degree))+3 lies between -4 and 10

**kmondaldgms**19th August 2018 12:23 AM

### CBSE XII Science Mathematics

## If y = sin(log x), prove that x2d2y/dx2 + xdy/dx + y = 0 Explain in great detail

**haroonrashidgkp**25th August 2018 7:06 PM

### CBSE XI Science Mathematics Trigonometric Functions

## Which of the following is the correct option?

**dineshchem108**3rd September 2018 9:03 AM

### JEE Plances JEE (Main) Mathematics

## Q) Solve the following equation; sinx-3sin2x+sin3x=cosx-3cos2x+cos3x.

**Anish**9th September 2018 8:02 PM

### CBSE XII Science Mathematics

## If in a triangle ABC , the side c and the angle c remain constant while the remaining elements are changed slightly , show that da/cosA + db/cosB = 0 Explain in great detail

**haroonrashidgkp**22nd September 2018 3:39 PM

### ICSE X Mathematics

## 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 XII Commerce Mathematics

## 2 sin^-1(1/√2)-sin^-1(1/2)

**kumarsaurav68**2nd October 2018 8:31 PM

### JEE Plances JEE (Main) Mathematics

## in any triangle ABC , (a+b)^2sin^2c/2+(a-b)^2cos^2c/2=

**nd films**6th October 2018 6:48 PM

### JEE Plances JEE (Main) Mathematics

## A+B+C=180 DEGREES find value of Sin2A+Sin2B+6sin2C and Cos2A+Cos2B+6Cos2C

**Vidushi412**7th October 2018 2:56 PM

### ICSE IX Mathematics Trigonometry

## Please solve this question. Correct answer is option (c).

**Mohammed**13th October 2018 4:18 PM

### CBSE XII Science Mathematics Integrals

## Integration ex (2 – sin 2x/1- cos2x)dx explain in great detail

**haroonrashidgkp**26th October 2018 9:39 AM

### JEE Plances JEE (Main) Mathematics

## Detailed solution for this.

**g_archanasharma**16th December 2018 6:19 PM

### ICSE X Mathematics Trigonometric Identities

## Prove that

**debabratap261**18th January 2019 10:24 AM

### CBSE X Mathematics 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

### JEE Main Mathematics Trigonometry

## If in a ∆ABC ,cotA/2+cotB/2+cotC/2=k cotA/2cotB/2 cotC/2, then find the value of k.

**azizrajil03**28th February 2019 3:54 PM

### CBSE XI Commerce Mathematics

## sinx + sin3x/cosx -con3x = cotx

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

### CBSE XI Science Mathematics Trigonometric Functions

## Find the values of x for which it satisfies tanx = cot 5 x as well as sin 2x = cos 4x [x€ (-π/2,π/2)]

**sajal2402**30th July 2019 11:19 AM

### CBSE XI Science Mathematics Trigonometric Functions

## plzz explain how to solve it with the solution

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

### ICSE IX Mathematics Trigonometry

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

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

### ICSE X Mathematics Trigonometric Identities

## Are marks deducted for not writing the reasons in trigonometrical proving questions?

**nidhisingh200418**3rd March 2020 6:24 PM

### ICSE X Mathematics

## Are marks deducted for not writing the reasons in trigonometrical proving questions even in icse board papers?

**nidhisingh200418**4th March 2020 4:14 PM

### CBSE XI Science Mathematics Trigonometric Functions

## If the value of cosec x repeats after an interval of 2,then what is the value of cosec(7/6)?

**dppanigrahiadv**26th May 2020 7:03 PM

### CBSE XI Science Mathematics Trigonometric Functions

## trigonometry ka question hai please solve

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

### CBSE XI Science Mathematics Trigonometric Functions

## clear my doubt

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

### CBSE XI Science Mathematics 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 Mathematics

## need answer for 12 question

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

### CBSE XI Science Mathematics Trigonometric Functions

## Q10

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

### ICSE XI Science Mathematics

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

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

### CBSE XII Science Mathematics

## cos¯¹[cos(680°)]

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

### CBSE XI Science Mathematics Trigonometric Functions

## pls clear the doubt, dear sir/ madam

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

### CBSE XI Science Mathematics Trigonometric Functions

## A+B=360° tanA+tanB/1-tanA tanB

**ManjuShaharraiya**15th September 2020 9:57 PM

### CBSE XI Science Mathematics 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 XI Science Mathematics Trigonometric Functions

## cos square (60-x) +cos square (60+x) belongs to

**bandlapravalika4**25th September 2020 1:32 PM

### CBSE X Mathematics Introduction to Trigonometry

## sin60cos30+sin30cos60

**guru131851**27th September 2020 10:52 AM

### CBSE XII Commerce Mathematics

## 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 Mathematics Trigonometry

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

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

### CBSE XI Science Mathematics Trigonometric Functions

## If A+B+C=pi , then equality of equation (1/2)(cosA cosB + cosB cosC + cosC cosA) must hold: a) <= 3/2. b) >=(-3) c) <=3/8 d) >=(-1)

**shanujam03**3rd October 2020 8:59 PM

### ICSE IX Mathematics Trigonometry

## In a triangle ABC, show that : tan B+C/2 = cot A/2

**indirasolanki5661.9sdatl**13th March 2021 10:43 AM

### CBSE XII Science Mathematics

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

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