Answer
$\theta =\frac{\pi}{3}$ is a half-plane. See the figure below.
Work Step by Step
$\theta =\frac{\pi}{3}$ is a half-plane rotated $60^{\circ}$ from the x-axis. See the figure below.
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 13 - Vector Geometry - 13.7 Cylindrical and Spherical Coordinates - Exercises - Page 699: 18
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