Find the Exact Value arcos (-1/2)

$\arccos (- \frac{1}{2})$

Write the problem as a mathematical expression.

$\arccos (- \frac{1}{2})$

The exact value of $\arccos (- \frac{1}{2})$ is $\frac{2 π}{3}$ .

$\frac{2 π}{3}$

The result can be shown in multiple forms.

Exact Form:

$\frac{2 π}{3}$

Decimal Form:

$2.09439510 \dots$