Precalculus Examples

$\cos (427)$

Step 1

Remove full rotations of $360$ ° until the angle is between $0$ ° and $360$ °.

$\cos (67)$

Step 2

The result can be shown in multiple forms.

Exact Form:

$\cos (67)$

Decimal Form:

$0.39073112 \dots$

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