Answer
$\frac{2}{3}$ radians
Work Step by Step
We use the formula $s=θr$
We re-arrange the formula for $θ$: $θ=\frac{s}{r}$
We plug in the given values and simplify: $θ=\frac{1}{1.5}=\frac{2}{3}$ radians
Calculus 8th Edition
by Stewart, James
Published by
Cengage
ISBN 10:
1285740629
ISBN 13:
978-1-28574-062-1
Appendix D - Trigonometry - D Exercises - Page A32: 15
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