OpenStax, Precalculus 2e §7.4 Sum-to-Product and Product-to-Sum Formulas · Exercise 42 · Trigonometry · Compound & multiple angles
Sum-to-Product and Product-to-Sum Formulas · Exercise 42
Rewrite the sum as a product of two functions or the product as a sum of two functions. Give your answer in terms of sines and cosines. Then evaluate the final answer numerically, rounded to four decimal places.
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OpenStax, Precalculus 2e · §7.4 Sum-to-Product and Product-to-Sum Formulas · Exercise 42
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