Double-Angle and Half-Angle Identities

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Presentation transcript:

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

Power-Reducing Identities

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

If find the values of the following trigonometric functions.

If find the values of the following trigonometric functions.

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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