Trigonometry Examples

$\cos (- 720)$

Step 1

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

$\cos (0)$

Step 2

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

$1$

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