Answer
$r~cos~\theta = k$
Work Step by Step
$x=k$
We know that $y = r~cox~\theta$
Therefore: $r~cos~\theta = k$
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 8 - Complex Numbers, Polar Equations, and Parametric Equations - Section 8.5 Polar Equations and Graphs - 8.5 Exercises - Page 388: 37
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