Trigonometry Examples

arccos (cos (\frac{38 π}{13}))

$\arccos (\cos (\frac{38 π}{13}))$

Step 1

Subtract full rotations of

2 π

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

0

$0$ and less than

2 π

$2 π$ .

arccos (cos (\frac{12 π}{13}))

$\arccos (\cos (\frac{12 π}{13}))$

Step 2

The result can be shown in multiple forms.

Exact Form:

arccos (cos (\frac{12 π}{13}))

$\arccos (\cos (\frac{12 π}{13}))$

Decimal Form:

2.89993168 \dots

$2.89993168 \dots$

⎡ ⎢ ⎣ \begin{matrix} x^{2} & \frac{1}{2} \sqrt{π} & \int x d x \end{matrix} ⎤ ⎥ ⎦

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