Precalculus and Advanced Topics Module 4, Topic A, Lesson 3

Student Writing

Student Outcomes

  • Students prove the subtraction formula for cosine and use their understanding of the properties of the trigonometric functions to derive the remaining addition and subtraction formulas for the sine, cosine, and tangent functions.
  • Students use the addition and subtraction formulas to evaluate trigonometric functions to solve problems.

Downloadable Resources

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Common Core Learning Standards

CCLS State Standard
F.TF.9 (+) Prove the addition and subtraction formulas for sine, cosine, and tangent and use them to solve...

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