Answer
$A=B=C=60^\circ$
Work Step by Step
As the three sides are equal, we can identify the triangle as equilateral. Thus, we have
$A=B=C=60^\circ$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 6 - Section 6.2 - The Law of Cosines - Exercise Set - Page 730: 22
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