Question

Question #3add7

Answer 1

`(1/4)sin^2 2t`

Explanation:

`(1 - sin^2 (-t))/(1 + cot^2 (-t)) = ((1 - sin^2 t)/(1 + cot^2 t)) =`
`(cos^2 t)(1/(1 + cot^2 t)) = (cos^2 t)(sin^2 t) = (1/4)sin^2 2t`