Trigonometry Examples

$\cos (360)$

Step 1

To convert degrees to radians, multiply by $\frac{π}{180 °}$ , since a full circle is $360 °$ or $2 π$ radians.

Step 2

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

$\cos (0) \cdot \frac{π}{180}$ radians

Step 3

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

$1 \cdot \frac{π}{180}$ radians

Step 4

Multiply $\frac{π}{180}$ by $1$ .

$\frac{π}{180}$ radians