Algebra Examples

$\arccos (\cos (- \frac{π}{7}))$

Step 1

Add full rotations of

$2 π$ until the angle is greater than or equal to

$0$ and less than

$2 π$ .

$\arccos (\cos (\frac{13 π}{7}))$

Step 2

The result can be shown in multiple forms.

Exact Form:

$\arccos (\cos (\frac{13 π}{7}))$

Decimal Form:

$0.44879895 \dots$

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