MULTIPLE CHOICE QUESTION
Solve $4cos^2\theta = 1$ over the interval $[0, 2\pi)$.
B. $\frac{4\pi}{3}, \frac{5\pi}{3}$
D. $\frac{\pi}{3}, \frac{2\pi}{3}, \frac{4\pi}{3}, \frac{5\pi}{3}$
A. $\frac{\pi}{3}, \frac{2\pi}{3}$
C. $\frac{\pi}{3}, \frac{5\pi}{3}$