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17. LO11 Using an appropriate product-sum write sin 9xsin 7x as a sum. sin Asin B = [cos(A-B)-cos(A + B)] =1 cos AcosB =
17. LO11 Using an appropriate product-sum write sin 9xsin 7x as a sum. sin Asin B = [cos(A-B)-cos(A + B)] =1 cos AcosB = [cos (A-B) + cos(A+B)] C sin AcosB = 2 [sin(A-B)+ sin(A+B)]
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Financial Reporting and Analysis Using Financial Accounting Information
Authors: Charles H. Gibson
13th edition
1285401603, 1133188796, 9781285401607, 978-1133188797
