Calculus (3rd Edition)

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

Chapter 14 - Calculus of Vector-Valued Functions - 14.1 Vector-Valued Functions - Preliminary Questions - Page 709: 3

Answer

The projection onto the xz plane.

Work Step by Step

A circle can be parametrized with a sine component and a cosine component. The $x$ component is $cos(t)$, and the $z$ component is $sin(t)$; therefore, projecting the circle onto the xz plane will give a circle.
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