Answer
line of sight
Work Step by Step
If an observer is at the vertex of an angle and views an object in the direction of the
nonhorizontal side of the angle, then that side is the line of sight of the observer.
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 2 - Section 2.4 - Applications - 2.4 Problem Set - Page 91: 2
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