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5.5: Double and Half Angle Formulas

5.5: Double and Half Angle Formulas

Author: Chris Melograna
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Tutorial

Notesheet for 5.5

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Double Angle formulas using Right Triangles

Using Double Angle formulas to solve Equations

Using Double Angle formulas to Verify Identities

Half Angle formulas to find the value of non-special angles

Half angle formulas using Right Triangles