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Trigonometric Ratios in the Unit Circle

Trigonometric Ratios in the Unit Circle. 6 December 2010. Trigonometric Ratios in the Unit Circle. The unit circle has a radius of 1. Trigonometric Ratios in the Unit Circle, cont. The tangent and cotangent formulas stay the same. “ A ll S tudents T ake C alculus”. S. A.

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Trigonometric Ratios in the Unit Circle

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  1. Trigonometric Ratios in the Unit Circle 6 December 2010

  2. Trigonometric Ratios in the Unit Circle • The unit circle has a radius of 1

  3. Trigonometric Ratios in the Unit Circle, cont. • The tangent and cotangent formulas stay the same

  4. “All Students Take Calculus” S A sine is positive all functions are positive T C tangent is positive cosine is positive

  5. Example:

  6. Example: –240°

  7. Special Right Triangles 30-60-90 45-45-90 45° 60° 30° 45°

  8. Special Right Triangles & the Unit Circle

  9. Special Right Triangles & the Unit Circle

  10. Special Right Triangles & the Unit Circle

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