Precalculus Examples

$\sin (2 \cdot 15)$

Step 1

Multiply $2$ by $15$ .

$\sin (30)$

Step 2

The exact value of $\sin (30)$ is $\frac{1}{2}$ .

$\frac{1}{2}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\frac{1}{2}$

Decimal Form:

$0.5$

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