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Double-Angle and Half-Angle Identities

Double-Angle and Half-Angle Identities. Section 5.3. Objectives. Apply the half-angle and/or double angle formula to simplify an expression or evaluate an angle. Apply a power reducing formula to simplify an expression. . Double-Angle Identities. Half-Angle Identities.

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Double-Angle and Half-Angle Identities

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  1. Double-Angle and Half-Angle Identities Section 5.3

  2. Objectives • Apply the half-angle and/or double angle formula to simplify an expression or evaluate an angle. • Apply a power reducing formula to simplify an expression.

  3. Double-Angle Identities

  4. Half-Angle Identities

  5. Power-Reducing Identities

  6. Use a half-angle identity to find the exact value of

  7. If find the values of the following trigonometric functions.

  8. If find the values of the following trigonometric functions.

  9. Use the power-reducing formula to simplify the expression Is there another way to simplify this without using a power-reducing formula?

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