Trigonometry Examples

$\tan (2 \arccos (- \frac{4}{5}))$

Step 1

Evaluate $\arccos (- \frac{4}{5})$ .

$\tan (2 \cdot 2.49809154)$

Step 2

Multiply $2$ by $2.49809154$ .

$\tan (4.99618308)$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\tan (2 \arccos (- \frac{4}{5}))$

Decimal Form:

$- 3.42857142 \dots$

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