Trigonometry Examples

$\sin (- 60)$

Find the value using the definition of sine.

$\sin (- 60) = \frac{opposite}{hypotenuse}$

Substitute the values into the definition.

$\sin (- 60) = \frac{- \frac{\sqrt{3}}{2}}{1}$

Divide $- \frac{\sqrt{3}}{2}$ by $1$ .

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

The result can be shown in multiple forms.

Exact Form:

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

Decimal Form:

$- 0.86602540 \dots$

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