Question

Prove that ↓↓↓
$\frac{ \sin(a) }{1 - \cos(a) } + \frac{1 - \cos(a) }{ \sin(a) } = 2 \cosec(a)$
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Answer 1

Here u go

Refer the attachment.

Hope it helps u....

Answer 2

hope u understand the mistakes which are corrected in the above answer....