Answer
$2csc\theta$
Work Step by Step
$y=2$
We know that: $sin\theta=y/r$, so $y=rsin\theta$
Substituting for $y$, we get:
$rsin\theta=2$
$r=\frac{2}{sin\theta}=2csc\theta$
Calculus: Early Transcendentals 8th Edition
by Stewart, James
Published by
Cengage Learning
ISBN 10:
1285741552
ISBN 13:
978-1-28574-155-0
Chapter 10 - Section 10.3 - Polar Coordinates - 10.3 Exercises - Page 667: 21
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