Calculus Examples

$\cos^{2} (\sin (π))$

Step 1

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.

$\cos^{2} (\sin (0))$

Step 2

The exact value of $\sin (0)$ is $0$ .

$\cos^{2} (0)$

Step 3

The exact value of $\cos (0)$ is $1$ .

$1^{2}$

Step 4

One to any power is one.

$1$