Find the Exact Value of Cosine of 15 Degrees, cos(15)

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The Exact Value for Cosine of 15 Degrees - 2 Different Ways - cos(15)

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Write sin(15)cos(15) as a Single Trigonometric Function or Number in Exact Form

Evaluate `|[cos15^@, sin15^@] , [sin75^@,cos75^@]|`

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Find Exact Value of Cos15 Q2

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