Question

Can someone solve 8th question with full solution.

Answer 1

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Answer 2

sin 32 cos 58 + cos 32 sin 58/cosec^2 20 - tan^2 70

= sin 32 cos (90-32) + cos (90-58) sin 58/ cosec^2 (90-70) - tan^2 70
=sin 32 sin 32 + sin 58 sin 58 / tan^2 70 - tan^2 70
=sin 32 sin 32 + sin 58 sin 58/ 0
=0 (ans)