Trigonometry Examples

$15 \cdot \cos (30)$

Step 1

The exact value of $\cos (30)$ is $\frac{\sqrt{3}}{2}$ .

$15 \cdot \frac{\sqrt{3}}{2}$

Step 2

Combine $15$ and $\frac{\sqrt{3}}{2}$ .

$\frac{15 \sqrt{3}}{2}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\frac{15 \sqrt{3}}{2}$

Decimal Form:

$12.99038105 \dots$