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# Trigonometric Equations Using Half Angle Formulas

## Simplifying all six trigonometric functions with half a given angle.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
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## Trigonometric Equations Using Half Angle Formulas

Examples using half angle formulas

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## Example: Determine a Sine Function Using a Half Angle Identity

Shows an example of using a half-angle identity to determine the exact value of a sine function.

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