Trigonometry Examples

$\arccos (3 π)$

Step 1

Subtract $2 π$ from $3 π$ .

$A = 3 π - 2 π$

Step 2

The resulting angle of $π$ is positive, less than $2 π$ , and coterminal with $3 π$ .

$A = π$

Step 3

The result can be shown in multiple forms.

Exact Form:

$A = π$

Decimal Form:

$A = 3.14159265 \dots$