Trigonometry Examples

$\arccos (- 888)$

Step 1

Add $360 °$ to $- 888 °$ .

$A = - 888 ° + 360 °$

Step 2

The resulting angle of $- 528 °$ is coterminal with $- 888$ but isn't positive. Repeat the step.

$A = - 528 °$

Step 3

Add $360 °$ to $- 528 °$ .

$A = - 528 ° + 360 °$

Step 4

The resulting angle of $- 168 °$ is coterminal with $- 888$ but isn't positive. Repeat the step.

$A = - 168 °$

Step 5

Add $360 °$ to $- 168 °$ .

$A = - 168 ° + 360 °$

Step 6

The resulting angle of $192 °$ is positive and coterminal with $- 888$ .

$A = 192 °$

Step 7

The result can be shown in multiple forms.

Exact Form:

$A = 192 °$

Decimal Form:

$A = 192$