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Double Angle Formulas

Double Angle Formulas. T, 11.0: Students demonstrate an understanding of half-angle and double-angle formulas for sines and cosines and can use those formulas to prove and/or simplify other trigonometric identities. . Double Angle Formulas. Objectives. Key Words. Degrees Radians

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Double Angle Formulas

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  1. Double Angle Formulas T, 11.0: Students demonstrate an understanding of half-angle and double-angle formulas for sines and cosines and can use those formulas to prove and/or simplify other trigonometric identities.

  2. Double Angle Formulas Objectives Key Words Degrees Radians Double-Angle Identities • Know the double angle identities • Verify more complex trigonometric identities using the basic trigonometric identities, Pythagorean identities, co-function identities, odd/even identities, sum & difference identities, double angle identities, half-angle identities and justify each step in the verification process.

  3. Quick Check Solve Solve

  4. Double Angle Identities

  5. Using the Double Angle Formula

  6. Using the Double Angle Formula

  7. You Try If and has its terminal side in the first quadrant, find the exact value of each function.

  8. You Try If and has its terminal side in the first quadrant, find the exact value of each function.

  9. Verify Trigonometric Identity

  10. You Try

  11. Conclusions Summary Assignment Double Angle Formulas Page 453 #(8-12,21-23,28-30) • Verify that Sin2x cosx – cos2x sinx = sinx is an identity.

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