Answer
$sin~60°~cos~15°+cos~60°~sin~15°=sin~75°$
Work Step by Step
$sin(u+v)=sin~u~cos~v+cos~u~sin~v$
$sin~60°~cos~15°+cos~60°~sin~15°=sin(60°+15°)=sin~75°$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 7 - 7.4 - Sum and Difference Formulas - 7.4 Exercises - Page 538: 29
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