Answer
$179\ km$
Work Step by Step
Given $C=118^\circ, a=75.0\ km, b=131\ km$, use the Law of Cosines, we have
$c^2=a^2+b^2-2ab\ cosC=(75.0)^2+(131)^2-2(75.0)(131)cos118^\circ\approx32011$. Thus $c=\sqrt {32011}\approx179\ km$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 8 - Application of Trigonometry - Test - Page 843: 2
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
