Precalculus (6th Edition) Blitzer

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

Chapter 4 - Section 4.3 - Right Triangle Trigonometry - Exercise Set - Page 562: 55



Work Step by Step

The trigonometric ratios are as follows: $ \tan \theta =\dfrac{opposite}{adjacent}$ We need to use a scientific calculator and press the inverse tangent function $\tan^{-1}$ Suppose $\tan \theta =\dfrac{125}{172}$ This gives: $ \theta \approx 36^{\circ}$ So, the angle of elevation of the sun is approximately $36^{\circ}$
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