Trigonometry Examples

$\tan (- \frac{8 π}{5})$

Step 1

Add full rotations of $2 π$ until the angle is greater than or equal to $0$ and less than $2 π$ .

$\tan (\frac{2 π}{5})$

Step 2

The result can be shown in multiple forms.

Exact Form:

$\tan (\frac{2 π}{5})$

Decimal Form:

$3.07768353 \dots$