Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 12 - Parametric Equations, Polar Coordinates, and Conic Sections - 12.3 Polar Coordinates - Preliminary Questions - Page 617: 1



Work Step by Step

Since the points P and Q have the same radial coordinate, this tells us that they belong to the same circle (because the radius is the same). Thus, points P and Q with the same radial coordinate lie on the same circle with the center at the origin. So (a) is the right answer.
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