Answer to Question #347860 in Algebra for Stella

Question

If h (θ) = cos²θ, find h(0), h (1/4π), h(1/2π)

Answer 1

$$h(0)=\cos^2(0)=1^2=1$$

$$h(\pi/4)=\cos^2(\pi/4)=(\dfrac{\sqrt{2}}{2})^2=\dfrac{1}{2}$$

$$h(\pi/2)=\cos^2(\pi/2)=(0)^2=0$$