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Trig Functions of Any Angle

Trig Functions of Any Angle. Section 4.4. Learning Goal. I will be able to find and use reference angles along with evaluate trig functions of any angle. Finding Values. Find the exact values of the other five trig functions for an angle θ in standard position, given. 12. 2π. θ. -5. 13.

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Trig Functions of Any Angle

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  1. Trig Functions of Any Angle Section 4.4

  2. Learning Goal I will be able to find and use reference angles along with evaluate trig functions of any angle.

  3. Finding Values Find the exact values of the other five trig functions for an angle θ in standard position, given 12 2π θ -5 13 3π/2

  4. Finding Values Find the exact values of the other five trig functions for an angle θ in standard position, given π -1 2π θ -√3 2

  5. ref angle ref angle ref angle ref angle Reference Angles Reference Angle: the smallest positive acute angle determined by the x-axis and the terminal side of θ

  6. Find Reference Angle 150° 30° 225° 45° 300° 60°

  7. Using Reference Angles a) sin 330° = = - sin 30° = - 1/2 b) cos 0° = = 1

  8. Using Reference Angles f) sin (-120°)= = - sin 60°

  9. What I Learned Today

  10. Homework • P. 285 – 286 • All Vocabulary Check • Exercises (7, 9, 15, 17, 21, 41, 49)

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