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6.4 Sum and Difference Formulas. Sum and Difference Formulas for Cosines. (1) Find the exact value of. Theorem Sum and Difference Formulas for Sines. (2) Find the exact value of. Examples 3 - 7. Page 491: 13 – 21 odd. 8.
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Examples 3 - 7 • Page 491: 13 – 21 odd
(10)Establish the identity • Cos (3/2 + ) = sin
Assignment • Pages 491 – 492: 2, 10, 12, 18, 20, 22, 28, 30, 34, 64, and 74