Answer
$\theta = 127.17$
Work Step by Step
We can use the Alternative form of the Law of Cosines to solve this problem.
$cos(\theta) = \frac{3^{2} + 2^{2} - 4.5^{2}}{2(3)(2)}$
$\theta = 127.17$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 8 - 8.2 - Law of Cosines - 8.2 Exercises - Page 574: 46
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