Trigonometry Examples

$\cos (\frac{3}{2} \cdot π)$

Step 1

Combine $\frac{3}{2}$ and $π$ .

$\cos (\frac{3 π}{2})$

Step 2

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

$\cos (\frac{π}{2})$

Step 3

The exact value of $\cos (\frac{π}{2})$ is $0$ .

$0$