Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 7 - Review Exercises - Page 553: 84



Work Step by Step

$4~sin~45°~cos~15°=4(\frac{1}{2})[sin(45°+15°)+sin(45°-15°)]=2(sin~60°+sin~30°)=2(\frac{\sqrt 3}{2}+\frac{1}{2})=\sqrt 3+1$
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