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

Asked by 20th September 2012 10:07 PM

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

Asked by imabhi264 24th May 2017 12:03 PM

## Q21 pls

Asked by Tanishq 25th October 2017 5:27 PM

## Q1 pls

Asked by Tanishq 27th October 2017 10:00 AM

## Q2

Asked by Tanishq 28th October 2017 10:17 AM

## Q4 pls

Asked by Tanishq 28th October 2017 10:20 AM

## Q5 pls

Asked by Tanishq 28th October 2017 10:26 AM

## Solve  Sin(2x) > (Cosx)^2

Asked by sudhanshubhushanroy 15th November 2017 8:28 PM

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

Asked by sudhanshubhushanroy 15th November 2017 8:42 PM

## No idea for starting the following question..

Asked by nitishkrnehu09 23rd November 2017 9:43 AM

## 17

Asked by rbhatt16 7th December 2017 8:48 PM

## Solve:

Asked by nitishkrnehu09 10th December 2017 10:33 PM

## ques 9

Asked by rbhatt16 11th December 2017 8:38 PM

## Find the time period of following

Asked by venkat 12th December 2017 2:31 PM

## Find the time period of following

Asked by venkat 12th December 2017 2:33 PM

## ques 16

Asked by rbhatt16 12th December 2017 4:21 PM

## 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.

Asked by sudhanshubhushanroy 12th December 2017 8:22 PM

## 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  .

Asked by sudhanshubhushanroy 14th December 2017 6:49 AM

## 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  .

Asked by sudhanshubhushanroy 14th December 2017 6:51 AM

## 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  .

Asked by sudhanshubhushanroy 14th December 2017 6:52 AM

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

Asked by subhasray1968 21st December 2017 9:59 PM

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

Asked by sucharitasahoo1 26th December 2017 6:18 PM

## Sin2x+sin4x+sin6x=0

Asked by Chirag 2nd January 2018 12:34 PM

### CBSE XI Science Mathematics Trigonometric Functions

Asked by nitishkrnehu09 7th February 2018 9:52 PM

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

Asked by acv27joy 20th April 2018 2:53 PM

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

Asked by napaliwal 10th May 2018 7:53 AM

## can someone please solve!

Asked by pukai7229 16th May 2018 9:25 AM

## Prove the identity

Asked by Anish 16th June 2018 3:25 PM

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

Asked by rajkumarpandey3783 6th July 2018 9:02 PM

## Prove that

Asked by Anish 9th July 2018 1:08 PM

## 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

Asked by gargpuneet989 10th July 2018 6:28 PM

## Prove that:

Asked by 1784393325200864 16th July 2018 6:23 AM

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

Asked by haroonrashidgkp 15th August 2018 8:32 PM

## 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

Asked by kmondaldgms 16th August 2018 11:20 AM

## 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)

Asked by kmondaldgms 17th August 2018 12:03 AM

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

Asked by kmondaldgms 19th August 2018 12:23 AM

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

Asked by haroonrashidgkp 25th August 2018 7:06 PM

## Which of the following is the correct option?

Asked by dineshchem108 3rd September 2018 9:03 AM

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

Asked by Anish 9th September 2018 8:02 PM

## 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

Asked by haroonrashidgkp 22nd September 2018 3:39 PM

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

Asked by gautamkr517 23rd September 2018 9:03 PM

## 2 sin^-1(1/√2)-sin^-1(1/2)

Asked by kumarsaurav68 2nd October 2018 8:31 PM

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

Asked by nd films 6th October 2018 6:48 PM

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

Asked by Vidushi412 7th October 2018 2:56 PM

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

Asked by Mohammed 13th October 2018 4:18 PM

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

Asked by haroonrashidgkp 26th October 2018 9:39 AM

## sin45/coesc60+sec60

Asked by Nisarg 2nd November 2018 5:20 PM

## Detailed solution for this.

Asked by g_archanasharma 16th December 2018 6:19 PM

## Prove that

Asked by debabratap261 18th January 2019 10:24 AM

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

Asked by Kumarashish6345 22nd February 2019 8:57 AM

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

Asked by azizrajil03 28th February 2019 3:54 PM

## sinx + sin3x/cosx -con3x  = cotx

Asked by sanjeevnayan3 23rd June 2019 12:55 PM

## 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)]

Asked by sajal2402 30th July 2019 11:19 AM

## plzz explain how to solve it with the solution

Asked by ABHILASHA 7th September 2019 3:14 PM

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

Asked by ashwinipandey7355 3rd December 2019 11:01 PM

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

Asked by nidhisingh200418 3rd March 2020 6:24 PM

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

Asked by nidhisingh200418 4th March 2020 4:14 PM

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

Asked by dppanigrahiadv 26th May 2020 7:03 PM

## trigonometry ka question hai please solve

Asked by jaiswalpiyush040 20th July 2020 8:22 AM

## clear my doubt

Asked by kandukuriPraneeth16 25th July 2020 6:18 PM

## 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°?

Asked by Pallapothu.a 5th August 2020 4:13 PM

## need answer for 12 question

Asked by vhymag 7th August 2020 7:12 AM

## Q10

Asked by omved0304 7th August 2020 11:24 AM

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

Asked by shreyasrivastavaprayag 13th August 2020 11:06 PM

## cos¯¹[cos(680°)]

Asked by harsharyan363 15th August 2020 3:07 PM

## pls clear the doubt, dear sir/ madam

Asked by sachitshanchinal 2nd September 2020 2:53 PM

## A+B=360° tanA+tanB/1-tanA tanB

Asked by ManjuShaharraiya 15th September 2020 9:57 PM

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

Asked by apnp31 21st September 2020 12:19 PM

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

Asked by bandlapravalika4 25th September 2020 1:32 PM

## sin60cos30+sin30cos60

Asked by guru131851 27th September 2020 10:52 AM

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

Asked by adithyavardhansudagoni2004 27th September 2020 11:08 AM

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

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

## 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)

Asked by shanujam03 3rd October 2020 8:59 PM

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

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

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

Asked by rakeshpandey020280 17th March 2021 7:06 PM

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

Asked by debasreepartha 23rd April 2021 8:38 AM

## prove that

Asked by kirtigaur935 9th May 2021 12:29 PM