Answer
2.50
Work Step by Step
$\arccos(-0.8)$
=$\cos^{-1} \left( -0.8 \right)$
$\approx2.498091545$
$=2.50$
Calculus 10th Edition
by Larson, Ron; Edwards, Bruce H.
Published by
Brooks Cole
ISBN 10:
1-28505-709-0
ISBN 13:
978-1-28505-709-5
Chapter 5 - Logarithmic, Exponential, and Other Transcendental Functions - 5.6 Exercises - Page 372: 11
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