Precalculus (6th Edition) Blitzer

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

Chapter 5 - Test - Page 709: 7


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Work Step by Step

Step 1. $LHS=\frac{1/cos(x)}{cos(x)/sin(x)+sin(x)/cos(x)}=\frac{sin(x)}{cos^2(x)+sin^2(x)}=\frac{sin(x)}{1}$ Step 2. $RHS=sin(x)=\frac{sin(x)}{1}$ Step 3. Since $LHS=RHS$, we verified the identity.
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