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Finding Exact Trigonometric Values Using Double Angle Identities

Sine, cosine, and tangent of angles other than multiples of 30, 45, and 60 degrees.

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Practice Finding Exact Trigonometric Values Using Double Angle Identities
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Finding Exact Trig Values Using Formulas

Finding Exact Trig Values Using Formulas

An example of how to determine the exact value of a sine function using a half angle identity.

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