Answer
$9.13 u$
Work Step by Step
Using Law of Cosines
$c^2 = a^2 + b^2 - 2ab \cos C$
$x^2 = 10^2 + 12^2 - 2(10)(12) \cos 48$
$x^2 = 244 - 240 \cos 48$
$x^2 = 83.41$
$x = 9.13 u$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 6 - Review - Test - Page 532: 13
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