Answer
$20.8 \ lb $
Work Step by Step
The sine of an angle is defined as force over weight.
Thus, $ \sin \theta=\dfrac{force}{weight}$
This implies that $ \sin 12^{\circ}=\dfrac{F}{100}$
or, $F=100 \sin 12^{\circ} =20.8 \ lb $
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 8 - 8.3 - Vectors in the Plane - 8.3 Exercises - Page 587: 89
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