Answer
$x=a~cos~t$
$y=a~sin~t$
Work Step by Step
$x^2+y^2=a^2$
$(\frac{x}{a})^2+(\frac{y}{a})^2=1$
$\frac{x}{a}=cos~t$
$x=a~cos~t$
$\frac{y}{a}=sin~t$
$y=a~sin~t$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 8 - Section 8.4 - Plane Curves and Parametric Equations - 8.4 Exercises - Page 617: 35
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