Question

Simplify each trigonometric expression. 1-cos² θ

Answer 1

`\sin ^2\left(\theta\right)`

Explanation:

Pythagorean identity

`1=\cos ^2\left(x\right)+\sin ^2\left(x\right)\\1-\cos ^2\left(x\right)=\sin ^2\left(x\right)\\=\sin ^2\left(\theta\right)`