Answer
$r= \sqrt 2$
Work Step by Step
$x^2+y^2=2$
To convert this equation into a polar equation, put $x=rcos\theta$ and $y=rsin \theta$
$r^2cos^2\theta + r^2sin ^2\theta =2$
$ r^2=2$
$r= \sqrt 2$
Calculus: Early Transcendentals 8th Edition
by Stewart, James
Published by
Cengage Learning
ISBN 10:
1285741552
ISBN 13:
978-1-28574-155-0
Chapter 10 - Review - Exercises - Page 690: 18
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