9.2 Define General Angles and Use Radian Measure

90 degrees

180 degrees

45 degrees

270 degrees

$$\frac{2\pi}{3}$$ radians

$$\frac{\pi}{3}$$ radians

$$\frac{\pi}{2}$$ radians

$$\pi$$ radians

$$3\pi$$ radians

$$2\pi$$ radians

$$4\pi$$ radians

$$6\pi$$ radians

$$\frac{3\pi}{2}$$ radians

$$\frac{3\pi}{4}$$ radians

$$\frac{5\pi}{4}$$ radians

$$\frac{9\pi}{4}$$ radians

30 degrees

60 degrees

90 degrees

15 degrees

$$2\pi$$ radians

$$\pi$$ radians

$$\frac{\pi}{2}$$ radians

$$\frac{3\pi}{2}$$ radians

$$\frac{3\pi}{2}$$ radians

$$\frac{5\pi}{3}$$ radians

$$\frac{7\pi}{4}$$ radians

$$\frac{\pi}{2}$$ radians

$$\frac{\pi}{4}$$ radians

$$\frac{\pi}{8}$$ radians

$$\frac{\pi}{2}$$ radians

$$\frac{3\pi}{8}$$ radians

$$4\pi$$ radians

$$0$$ radians

$$-\pi$$ radians

$$6\pi$$ radians

$$\frac{5\pi}{4}$$ radians

$$\frac{3\pi}{4}$$ radians

$$\frac{\pi}{4}$$ radians

$$\frac{7\pi}{4}$$ radians