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Geometry & Trigonometry
Circles
AP Precalculus
Unit 3: Trigonometric and Polar Functions
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π/6
√3/3
π/4
1
π/3
√3
π/2
undefined
2π/3
-√3
3π/4
-1
5π/6
-√3/3
π
7π/6
5π/4
4π/3
3π/2
5π/3
7π/4
11π/6