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Dear Sir, Please solve the trignometry maths..attached here with mentioned ..VIII, IX, X.

Dear Sir, 
 
Please solve the trignometry maths..attached here with mentioned ..VIII, IX, X.
 
 

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Grade:12th pass

1 Answers

yathartha gupta
71 Points
6 years ago
(viii) by taking R.H.S. Let suppose theta=x sinx.sin(90-x)/2sin^2(90-x)-1 Sinx.cos/2(sin(90-x))^2-1 2/2[sinx.cosx/2cos^2x-1] 2sinx.cosx/2cos2x Sin2x/2cos2x 1/2tan2x 1/2.tan(x+x) 1/2[tanx+tanx/1-tanx.tanx] 1/2[2tanx/1-tan^2x] tanx/1-tan^2x hence proved

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