Precalculus Examples

$30 °$

Step 1

The exact value of

$\cos (30 °)$ is

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

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

Step 2

The exact value of

$\sin (30 °)$ is

$\frac{1}{2}$ .

$\frac{1}{2}$

Step 3

Set up the coordinates

$(\cos (θ), \sin (θ))$ .

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

Enter a problem...

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$