Trigonometry Examples

$\frac{1}{2} \cdot ((18) \sin (30))$

Step 1

Cancel the common factor of $2$ .

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Step 1.1

Factor $2$ out of $(18) \sin (30)$ .

$\frac{1}{2} \cdot (2 ((9) \sin (30)))$

Step 1.2

Cancel the common factor.

$\frac{1}{2} \cdot (2 ((9) \sin (30)))$

Step 1.3

Rewrite the expression.

$(9) \sin (30)$

$(9) \sin (30)$

Step 2

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

$9 (\frac{1}{2})$

Step 3

Combine $9$ and $\frac{1}{2}$ .

$\frac{9}{2}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\frac{9}{2}$

Decimal Form:

$4.5$

Mixed Number Form:

$4 \frac{1}{2}$

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