Question

please answer this question frnds

Answer 1

HI YOUR ANSWER IS
LHS =
= cosec A - 1 / cosec A + 1
= 1 / sin A - 1 / 1 /sin A +1
= 1-sin A /sin A / 1+sin A/ sin A
= 1 -sin A / 1 + sin A = R.H.S.