Trigonometry Examples

$\cos (2 \arctan (\frac{4}{3}))$

Step 1

Evaluate $\arctan (\frac{4}{3})$ .

$\cos (2 \cdot 0.92729521)$

Step 2

Multiply $2$ by $0.92729521$ .

$\cos (1.85459043)$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\cos (2 \arctan (\frac{4}{3}))$

Decimal Form:

$- 0.27\overline{9}$

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