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Trigonometry

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## Trigonometry

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**Trigonometry**3.1 Reference Angles**Reference angle**For any angle θin standard position it is the positive acute angle between the terminal side of θand the x-axis.**Reference angle Theorem**A trig function of an angle and its reference angle will differ at most in sign.**Examples**Find the exact value of cos 495°**Homework**Page 113: 1-79 odds