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Half Angle or Double Angle Examples

Videos, worksheets, games and acivities to help PreCalculus students learn how to use the half angle or double angle formula in some examples.

 

 

Cosine Half and Double Angle Formula
A quick tutorial on finding the exact ratio for the cosine of an angle using the half angle or double angle formula.

 

 

Sine Half and Double Angle Formula
A quick tutorial on finding the exact ratio for the sine of an angle using the half angle or double angle formula

 

 

Tangent Half and Double Angle Formula
A quick tutorial on finding the exact ratio for the tangent of a angle using the half angle or double angle formula.

 

 

 

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