Answer
$123$
Work Step by Step
Here, we have $ x= 400 \tan 40^{\circ} - 400 \tan 28^{\circ}$
or, $=400( \tan 40^{\circ} - \tan 28^{\circ})$
or, $=400(0.3074)$
So, $ x=123$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 4 - Section 4.8 - Applications of Trigonometric Functions - Exercise Set - Page 638: 32
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