Question

Question #415ce

Answer 1

`5sin^2 x * "csc"^2x − 5sin^2 x`

`=5sin^2 x * 1/sin^2x − 5sin^2 x`

`=5 − 5sin^2 x`

`=5(1 − sin^2 x)`

`=5cos^2 x`