Trigonometry Examples

$\cos (2 \arctan (\frac{12}{5}))$

Step 1

Evaluate $\arctan (\frac{12}{5})$ .

$\cos (2 \cdot 1.1760052)$

Step 2

Multiply $2$ by $1.1760052$ .

$\cos (2.35201041)$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\cos (2 \arctan (\frac{12}{5}))$

Decimal Form:

$- 0.70414201 \dots$

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