lesson
Proving the Addition and Subtraction Formulas
Construct a proof of the addition and subtraction formulas for sine, cosine, and tangent using the unit circle or geometric arguments.

Construct a proof of the addition and subtraction formulas for sine, cosine, and tangent using the unit circle or geometric arguments.
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10th Grade · Math · CCSS
11 lessons
Prove and apply the addition and subtraction formulas for sine, cosine, and tangent, and use them to derive and apply the double angle formulas.