Trigonometry Examples

$\sin (2 \arccos (\frac{4}{5}))$

Step 1

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

$\sin (2 \cdot 0.6435011)$

Step 2

Multiply $2$ by $0.6435011$ .

$\sin (1.28700221)$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\sin (2 \arccos (\frac{4}{5}))$

Decimal Form:

$0.96$

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