Answer
$cosθ-sinθ=0$
Work Step by Step
$x=y$
$rcosθ=rsinθ$
$cosθ=sinθ$
$cosθ-sinθ=0$
Multivariable Calculus, 7th Edition
by Stewart, James
Published by
Brooks Cole
ISBN 10:
0-53849-787-4
ISBN 13:
978-0-53849-787-9
Chapter 10 - Parametric Equations and Polar Coordinates - 10.3 Exercises - Page 687: 22
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