Answer
a) $\frac{\pi}{3}$
b) $(-\frac{1}{2},\frac{\sqrt 3}{2})$
Work Step by Step
a) $2\pi - \frac{2\pi}{3} = \frac{\pi}{3}$
b) $\frac{2\pi}{3}$ has the terminal point $(-\frac{1}{2},\frac{\sqrt 3}{2})$ on the unit circle.
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