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7.2: Addition and Subtraction Formulas

7.2: Addition and Subtraction Formulas. TSW understand and be able to apply the addition formulas for sine and cosine and understand the idea that a sin(x) + b cos(x) is a phase-shifted sine wave at an 85% mastery level as demonstrated by discussion and practice. Formulas.

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7.2: Addition and Subtraction Formulas

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  1. 7.2: Addition and Subtraction Formulas TSW understand and be able to apply the addition formulas for sine and cosine and understand the idea that asin(x) + bcos(x) is a phase-shifted sine wave at an 85% mastery level as demonstrated by discussion and practice.

  2. Formulas Formulas for sine Formulas for cosine Formulas for tangent

  3. Using the Formulas Ex: Find the exact value of each expression. Ex: Find the exact value of the expression. Prove the cofunction identity:

  4. Proving Identities Ex: Verify the identity: Ex: If f(x) = sinx, show that

  5. Expressions of Form Asinx + Bcosx

  6. Form Asinx + Bcosx

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