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Finding exact cosine function values with sum and difference identities Example #3
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Classroom Contents
Deriving the Sum and Difference Identities for Cosine - Finding Cos -s + t-
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- 1 Cosine of a sum or difference formulas
- 2 Deriving the formula for the sum identity for cosine
- 3 Deriving the formula for the difference identity for cosine
- 4 Finding exact cosine function values with sum and difference identities Example #1
- 5 Finding exact cosine function values with sum and difference identities Example #2
- 6 Finding exact cosine function values with sum and difference identities Example #3
- 7 Cofunction identities
- 8 Verifying identities with sum and difference identities Example #1
- 9 Verifying identities with sum and difference identities Example #2
- 10 Finding cos(s + t)
