Precalculus (6th Edition) Blitzer

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

Chapter 4 - Section 4.6 - Graphs of Other Trigonometric Functions - Exercise Set - Page 611: 61

Answer

$d=10sec(x)$
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Work Step by Step

Step 1. Based on the given conditions, we have $cos(x)=\frac{10}{d}$ which gives $d=10sec(x)$ Step 3. We can graph the function for $-\frac{\pi}{2}\lt x\lt \frac{\pi}{2}$ as shown in the figure.
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