Trigonometry1

Prove

(1 - cos A) /(sin A)

tan(A/2)

1 Answers

29
govind ·

this is a simple one ..write cosA = (1 - tan2 A/2)/(1 + tan2A/2)
and sinA = 2tanA/2/(1 + tan2A/2)
sry neither image uploader nor latex working...otherwise i wud have posted the solution..
substitute the abv values..u will get the answer

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