# Chapter 4 - Section 4.1 - Angles and Radian Measure - Exercise Set - Page 533: 77

$\frac{2\pi}{3}$ and $\frac{-4\pi}{3}$

#### Work Step by Step

$\frac{2\pi}{3}$ and $\frac{-4\pi}{3}$ have terminal side that passes through the origin and the point A.

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