Trigonometry Examples

$\tan (- 150 °)$

Step 1

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.

$\tan (30)$

Step 2

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

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

Step 3

The result can be shown in multiple forms.

Exact Form:

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

Decimal Form:

$0.57735026 \dots$