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Trigonometry

Trigonometry. 3.1 R eference Angles. Reference angle. For any angle θ in standard position it is the positive acute angle between the terminal side of θ and the x-axis. Reference angle Theorem. A trig function of an angle and its reference angle will differ at most in sign. Examples.

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Trigonometry

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  1. Trigonometry 3.1 Reference Angles

  2. Reference angle For any angle θin standard position it is the positive acute angle between the terminal side of θand the x-axis.

  3. Reference angle Theorem A trig function of an angle and its reference angle will differ at most in sign.

  4. Examples Find the exact value of cos 495°

  5. Find θif sin θ = -0.3090 with θin QIV.

  6. Homework Page 113: 1-79 odds

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