Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10:
ISBN 13:

Chapter 11 - Review Exercises - Page 524: 7

Answer

Sine ratio, $α \approx 49^{\circ}$

Work Step by Step

$sin = \frac{opposite}{hypotenuse}$ $sin(α) = \frac{9}{12}$ (Sine ratio) by GDC / calculator $α = 48.5903...^{\circ}$ $α \approx 49^{\circ}$
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