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If an angle theta is divided into two pa...

If an angle `theta` is divided into two parts A and B such that `A-B=x `and `tanA :tanB=k :1`, then the value of sinx is

A

`(K-1)/(K-1)sinalpha`

B

`(k)/(k+1)sinalpha`

C

`(k-1)/(k+1)sinalpha`

D

none of these

Text Solution

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The correct Answer is:
C
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OBJECTIVE RD SHARMA-TRIGONOMETRIC RATIOS AND IDENTITIES-Exercise
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