Answer
False
Work Step by Step
s = $\frac{a + b + c}{2}$ where a, b, and c are side lengths.
The above formula is not the average of the side lengths.
False
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 575: 61
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