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Solved: a. Apply the formula for cos (A – B) to the
Chapter 1, Problem 58E(choose chapter or problem)
QUESTION:
a. Apply the formula for cos (A – B) to the identity sin ? = to obtain the addition formula for sin (A + B).b. Derive the formula for cos (A + B) by substituting –B for B in the formula for cos (A – B) from Exercise 35.
Questions & Answers
QUESTION:
a. Apply the formula for cos (A – B) to the identity sin ? = to obtain the addition formula for sin (A + B).b. Derive the formula for cos (A + B) by substituting –B for B in the formula for cos (A – B) from Exercise 35.
ANSWER:Solution:Step 1 of 3:In this problem, we have to derive the formula for