Trigonometry Examples

$15 \cos (90)$

Step 1

The exact value of $\cos (90)$ is $0$ .

$15 \cdot 0$

Step 2

Multiply $15$ by $0$ .

$0$

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