Answer
The equation $x+y=7$ can be converted to a polar equation by replacing $x$ with $r\cos \theta \,$ and $y$ with $r\sin \theta $.
Work Step by Step
See below.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 6 - Section 6.3 - Polar Coordinates - Concept and Vocabulary Check - Page 741: 11
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