(sin^(2)a-sin^(2)(b))/(sin(a)cos(a)-sin(b)cos(b))=tan(a+b)

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- Apr 26th 2012, 03:34 AMsrirahulanTrig Prove
(sin^(2)a-sin^(2)(b))/(sin(a)cos(a)-sin(b)cos(b))=tan(a+b)

- Apr 26th 2012, 04:23 AMigniteRe: Trig Prove
Consider these identities:

Please try to prove these identities.

Using these your equation becomes:

- Apr 27th 2012, 05:46 AMsrirahulanRe: Trig Prove
Great!