Precalculus (6th Edition) Blitzer

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

Chapter 9 - Section 9.4 - Rotation of Axes - Exercise Set - Page 1011: 62



Work Step by Step

With the given conditions, we can form a right triangle with a vertical side of $35$ and a hypotenuse of $60$. The elevation angle $\theta$ satisfies $sin\theta=\frac{35}{60}\approx0.5833$. Thus $\theta=asin(0.5833)\approx35.7^\circ$
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