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If (a-b)sin (theta+phi)=(a+b) sin(theta-...

If `(a-b)sin (theta+phi)=(a+b) sin(theta-phi) and a tan(theta//2)-b tan(phi//2)=c`, then the value of `sin phi` is equal to

A

`2ab//(a^(2)-b^(2)-c^(2))`

B

`2bc//(a^(2)-b^(2)-c^(2))`

C

`2bc//(a^(2)-b^(2)+c^(2))`

D

`2ab//(a^(2)-b^(2)+c^(2))`

Text Solution

Verified by Experts

The correct Answer is:
b
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