Precalculus Examples

$\cos (2 \arcsin (\frac{3}{5}))$

Step 1

Evaluate $\arcsin (\frac{3}{5})$ .

$\cos (2 \cdot 0.6435011)$

Step 2

Multiply $2$ by $0.6435011$ .

$\cos (1.28700221)$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\cos (2 \arcsin (\frac{3}{5}))$

Decimal Form:

$0.28000000 \dots$

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