Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 7 - Analytic Trigonometry - 7.3 Trigonometric Equations - 7.3 Assess Your Understanding - Page 470: 125

Answer

$tan\theta=-\frac{1}{3}, cot\theta=-3, sec\theta=\frac{\sqrt {10}}{3}, csc\theta=-\sqrt {10}$

Work Step by Step

Step 1. Based on the given values, we can identify that $\theta$ is in quadrant IV. Step 2. Form a right triangle with sides $x=3\sqrt {10}, y=\sqrt {10}, r=10$ with $|\theta|$ facing $y$. Step 3. We can find $tan\theta=-\frac{1}{3}, cot\theta=-3$ Step 4. We can find $sec\theta=\frac{\sqrt {10}}{3}, csc\theta=-\sqrt {10}$
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