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. . Double-Angle Identities. Half-Angle Identities.

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Double-Angle and Half-Angle Identities

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Double angle and half angle identities

Double-Angle and Half-Angle Identities

Section 5.3


Objectives

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

Double-Angle Identities


Half angle identities

Half-Angle Identities


Power reducing identities

Power-Reducing Identities


Use a half angle identity to find the exact value of

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.


If find the values of the following trigonometric functions1

If find the values of the following trigonometric functions.


Use the power reducing formula to simplify the expression

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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