Answer
$19^{\circ}$
Work Step by Step
Let $\alpha$ be the angle formed by the rope and the water.
$\sin\alpha=\frac{4}{12}$
$\alpha=\sin^{-1}\frac{4}{12}$
$\alpha\approx19^{\circ}$
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 11 - Section 11.1 - The Sine Ratio and Applications - Exercises - Page 505: 32
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