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Section 6.1.2 Inverse Sine and Cosine

Section 6.1.2 Inverse Sine and Cosine. Lesson Objective: Students will: Graph the relations for inverse sine and cosine. Restrict the range for to make them functions. Use inverse functions to solve for angles which are not special angles in the unit circle. Definition.

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Section 6.1.2 Inverse Sine and Cosine

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  1. Section 6.1.2 Inverse Sine and Cosine

  2. Lesson Objective: Students will: • Graph the relations for inverse sine and cosine. • Restrict the range for to make them functions. • Use inverse functions to solve for angles which are not special angles in the unit circle.

  3. Definition • The inverse of sin x is arcsinx or sin-1x • The notation y=arcsinxcan be thought of as “the arc whose sign is …” This connects the inverse back to the unit circle • The inverse of cos x is arccosx or cos-1x

  4. Important Idea

  5. Closure After using the unit circle or calculator to find one angle for the inverse of a function, how can you easily find the additional angle?

  6. Assignment Pg 276 #6-26 to 6-34

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