Ask Me Help Desk - Prove this ;- (sine A/2)/(cosA/2 1) = tanA/2?

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prove this ;- (sine A/2)/(cosA/2 1) = tanA/2?

prove this ;- (sine A/2)/(cosA/2 +1) = tanA/2?

Um... do you realise that:

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

Hence, this is not a valid proof.

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