Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 5 - Section 5.2 - Sum and Difference Formulas - 5.2 Problem Set - Page 290: 61

Answer

See the steps.

Work Step by Step

$\sin{(A+B)} + \sin{(A-B)} = $ $$ \sin{A} \cos{B} + \cos{A} \sin{B} + \sin{A} \cos{B} - \cos{A} \sin{B} $$ $LHS = 2 \sin{A} \cos{B} = RHS$
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