Precalculus Examples

$60 °$

Step 1

The exact value of $\cos (60 °)$ is $\frac{1}{2}$ .

$\frac{1}{2}$

Step 2

The exact value of $\sin (60 °)$ is $\frac{\sqrt{3}}{2}$ .

$\frac{\sqrt{3}}{2}$

Step 3

Set up the coordinates $(\cos (θ), \sin (θ))$ .

$(\frac{1}{2}, \frac{\sqrt{3}}{2})$