Trigonometry Examples

$\sin (120 °)$

Step 1

Find the value using the definition of sine.

$\sin (120 °) = \frac{opposite}{hypotenuse}$

Step 2

Substitute the values into the definition.

$\sin (120 °) = \frac{\frac{\sqrt{3}}{2}}{1}$

Step 3

Divide

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

$1$ .

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

Step 4

The result can be shown in multiple forms.

Exact Form:

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

Decimal Form:

$0.86602540 \dots$

Step 5

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