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# Double-Angle and Half-Angle Identities PowerPoint PPT Presentation

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.

Double-Angle and Half-Angle Identities

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## 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.

### Use the power-reducing formula to simplify the expression

Is there another way to simplify this without using a power-reducing formula?