π/6
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Geometry & Trigonometry
Circles
AP Precalculus
Unit 3: Trigonometric and Polar Functions
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30°
π/4
45°
π/3
60°
π/2
90°
2π/3
120°
3π/4
135°
5π/6
150°
π
180°
7π/6
210°
5π/4
225°
4π/3
240°
3π/2
270°
5π/3
300°
7π/4
315°
11π/6
330°