Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 5 - Section 5.4 - Product-to-Sum and Sum-to-Product Formulas - Exercise Set - Page 690: 41


We know that the above formula is a sum-to-product formula. It states that the addition of two sines will result in double the product of the sines and cosines expressions. Thus, this formula can be used to change the sum of two sines into the product of sines and cosines expressions.

Work Step by Step

Given above.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.