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View Full Version : Prove this ;- (sine A/2)/(cosA/2 1) = tanA/2?


Thrimani
Mar 1, 2011, 08:32 AM

Thrimani
Mar 1, 2011, 08:39 AM

Unknown008
Mar 1, 2011, 09:31 AM
Um... do you realise that:

\tan A = \frac{\sin A}{\cos A}

Hence, this is not a valid proof.