`8 cot^2A-8 cosec^2A` is equal to   a) 8   b) `1/8`   c) `-8`   d) -`1/8`
Channel: Doubtnut
Date: 2020-04-12

`8 cot^2A-8 cosec^2A` is equal to   a) 8   b) `1/8`   c) `-8`   d) -`1/8`