Recent questions tagged proving trigonometric identities

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cos 2x = sin(-523)

asked Mar 5 in Trigonometry Answers by Vukosi | 37 views

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cos(x-y)-cos(x+y)=2sin(x)sin(y)prove the identities with each step

asked Feb 24, 2019 in Trigonometry Answers by stephanie | 314 views

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tan θ (cos θ + cot θ) = sin θ + 1

asked Feb 5, 2019 in Trigonometry Answers by ysa | 136 views

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How to prove (1+2sinx.cosx)/(1-2sin^2x)=(1+tanx)/(1-tan)

asked May 3, 2018 in Trigonometry Answers by Reneilwe | 85 views

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Prove the following

asked Mar 30, 2018 in Trigonometry Answers by Paula | 57 views

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Prove that: (cos theta + cos beta)/(sin beta - sin theta) = (sin theta + sin beta)/(cos theta - cos beta)

asked Aug 5, 2017 in Trigonometry Answers by anonymous | 326 views

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prove that cos(A+B)+sin(A-B)=2sin(45+A)cos(45+B)

asked Jun 27, 2017 in Trigonometry Answers by paula | 527 views

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sin0+cos0+tan0=?

asked Jun 19, 2017 in Trigonometry Answers by anonymous | 427 views

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{sin(x+h) - sin x}/h = {2sin(h/2)cos(x+h/2)}/h

asked Jun 10, 2017 in Trigonometry Answers by Romit mishra | 206 views

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exponential coshx expand

asked May 19, 2017 in Other Math Topics by anonymous | 140 views

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prove 1/(sec(theta)-1)-1/(sec(theta)+1)=2cot^2(theta)

asked Apr 24, 2017 in Trigonometry Answers by anonymous | 306 views

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sinx/tanxcosx

asked Apr 21, 2017 in Trigonometry Answers by anonymous | 316 views

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Cot2x - tan 78 = ( sec x sec 78 )/2

asked Mar 8, 2017 in Trigonometry Answers by Mac2016 Level 1 User (640 points) | 258 views

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tanx +(cosx÷sinx) =1 ÷(sinx × cosx)

asked Mar 1, 2017 in Trigonometry Answers by pertunia | 149 views

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cos^2x-sinx=1

asked Nov 30, 2016 in Calculus Answers by Cam | 115 views

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Prove the trigonometric equation :(sec x +tan x)/(sec x - tan y)=(1 +2sin x + sin^2 x)/cos x

asked Nov 3, 2016 in Trigonometry Answers by anonymous | 160 views

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if a=cos?+i sin?,0<?<2p prove that (1+a)/(1-a)=i cot?(?/2) if x+iy=v((a+ib)/(c+id )) prove that (x^2+y^2 )- (a^2+b^2)/(c^2+d^2 )

asked Oct 31, 2016 in Trigonometry Answers by cautionc | 310 views

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Sinx=tanxcosx

asked Sep 27, 2016 in Trigonometry Answers by Abdul rehman | 356 views

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Prove the identity

asked Jun 15, 2016 in Trigonometry Answers by Paula | 209 views

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Prove that, tanA + 2tan2A + 4tan4A + 8cot8A = cotA

asked May 16, 2016 in Trigonometry Answers by Shivam | 3.7k views

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prove the following trigonometric identity : sin^2 (theta) + 2 sin (theta)cos (theta) = 1- cos^2 (theta) + sin 2(theta)

asked Feb 8, 2016 in Algebra 2 Answers by nikki | 284 views

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prove the following trigonometric identity : tan theta + cot theta - 2cosec 2 theta = 0

asked Feb 8, 2016 in Algebra 2 Answers by nikki | 249 views

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prove the following trigonometric identity sin^2 theta + 2 sin theta cos theta = 1- cos ^2 theta + sin 2 theta

asked Jan 31, 2016 in Trigonometry Answers by nikki | 180 views

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1-sin x = cos ^2x

asked Nov 13, 2015 in Trigonometry Answers by anonymous | 188 views

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(sin x + cos x)^2 = 1

asked Nov 13, 2015 in Trigonometry Answers by anonymous | 201 views

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sin(tan^-1(1/2))

asked Nov 13, 2015 in Trigonometry Answers by anonymous | 168 views

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sec(sin^-1(1/2))

asked Nov 13, 2015 in Trigonometry Answers by anonymous | 202 views

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cos^-1(0.1423)

asked Nov 13, 2015 in Trigonometry Answers by anonymous | 155 views

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cos^4x - sin^4x= cos(2x)

asked Nov 6, 2015 in Trigonometry Answers by anonymous | 217 views

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cos^2(2x) - sin^2(2x)

asked Nov 6, 2015 in Trigonometry Answers by anonymous | 207 views

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If Cosx= -12/13 and csc x<0, find cot(2x)

asked Nov 6, 2015 in Trigonometry Answers by anonymous | 395 views

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sin3x + sinx/cosx + cos3x= tan2x

asked Nov 3, 2015 in Trigonometry Answers by anonymous | 413 views

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tan x/2= 1-cosx/sinx

asked Nov 3, 2015 in Trigonometry Answers by anonymous | 184 views

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sin(x-y)/sin(x+y)= tanx - tany/tanx + tany

asked Nov 3, 2015 in Trigonometry Answers by anonymous | 653 views

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sqr 2/2(sinx + cosx)= sin (x + pi/4)

asked Nov 3, 2015 in Trigonometry Answers by anonymous | 218 views

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cosx/ 1- sinx= 1+ sinx/cosx

asked Nov 3, 2015 in Trigonometry Answers by anonymous | 185 views

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cotx X sin2x=1 + cos2x

asked Nov 3, 2015 in Trigonometry Answers by anonymous | 299 views

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√2 cos²x+cosx=0

asked Apr 6, 2015 in Trigonometry Answers by anonymous | 176 views

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how do I solve sin(x) (cot(x) + tan(x))=sec(x)

asked Mar 14, 2015 in Algebra 1 Answers by anonymous | 129 views

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Simplify 6*tan(x) * (1 - [1 / {5 - (4*cos(x))}^1/2])

asked Jan 30, 2015 in Trigonometry Answers by anonymous | 142 views

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prove that cot(theta)+tan(theta)=csc^2(theta)+sec^2(theta)/csc theta sec theta

asked Jan 12, 2015 in Trigonometry Answers by den | 345 views

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How do I solve 4sin^2(x)-2=0

asked Dec 22, 2014 in Trigonometry Answers by anonymous | 183 views

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how to prove the following: tan^2x+1+tanx secx= 1+sin x/ cos^2x

asked Oct 26, 2014 in Calculus Answers by cynthia | 1.8k views

2 answers

verify the identity cot x/sec x = csc x - sin x

asked Oct 8, 2014 in Trigonometry Answers by anonymous | 230 views

2 answers

How to verify a trigonometric equation?

asked Aug 2, 2014 in Trigonometry Answers by Kimberly Yamson | 168 views

1 answer

Tan theta /(sec theta-1) tan theta /(sec theta 1)

asked Aug 1, 2014 in Trigonometry Answers by Aman Deep | 255 views

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verify each identity cos(x+h)-cosx/h=(cosx)(cosh-1/h)-(sinx)(sinh/h)

asked Jun 30, 2014 in Trigonometry Answers by anonymous | 1.1k views

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Verify......coshx+coshy=2cosh ((x+y)/2)sinh((x-y)/2)

asked Jun 20, 2014 in Trigonometry Answers by kapalu | 766 views

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Solve the trigonometric equation:tgx+sinx=1

asked Jun 3, 2014 in Trigonometry Answers by anonymous | 187 views

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Solve the trigonometric equation:

asked Jun 3, 2014 in Trigonometry Answers by anonymous | 182 views