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Warm up

10.3 Extending the Trigonometric Ratios. Warm up. 1. Solve the triangle. A. c. 12. C. B. 15. Section 10-3. Reciprocal Trig Ratios. 1. Sketch 150 °. 2. Sketch 210 °. 10.3 Extending the Trigonometric Ratios. Reciprocal Trig Function. 3. Find sec A. B. 11. 3. C. A. 7.

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Warm up

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  1. 10.3 Extending the Trigonometric Ratios Warm up 1. Solve the triangle A c 12 C B 15

  2. Section 10-3 Reciprocal Trig Ratios

  3. 1. Sketch 150°

  4. 2. Sketch 210°

  5. 10.3 Extending the Trigonometric Ratios Reciprocal Trig Function

  6. 3. Find sec A B 11 3 C A 7

  7. 10.3 Extending the Trigonometric Ratios Definitions Unit Circle Definition of Sine and Cosine: Let  be a rotational angle. Then sin  is the y-coordinate of the image of the point P(1, 0) rotated  ° about the origin, and cos  is the x-coordinate. θ

  8. 10.3 Extending the Trigonometric Ratios 4. Find the coordinates of point P on the unit circle. Point P has coordinates (cos 120, sin 120)  (–0.5, 0.8660).

  9. Assignment Enrichment 8-5 and page 652 # 13-32 # 21-28 are graphs and # 29 – 32 are find sine and cosine

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