Solve the Equation on the Interval $$0 \leq \theta < 2 \pi$$

Multiple Choice

Solve the equation on the interval $$0 \leq \theta < 2 \pi$$
- $2 \cos \theta + 1 = 0$

A) $\frac { 2 \pi } { 3 } , \frac { 4 \pi } { 3 }$
B) $\frac { \pi } { 3 } , \frac { 5 \pi } { 3 }$
C) $\frac { 3 \pi } { 2 }$
D) $\frac { \pi } { 2 } , \frac { 3 \pi } { 2 }$