#### Answer

$r=9csc^{2}θcosθ$

#### Work Step by Step

$y^{2}=9x$
$r^{2}sin^{2}θ=9rcosθ$
$r=\frac{9cosθ}{sin^{2}θ}$
$r=9csc^{2}θcosθ$

Published by
Brooks Cole

ISBN 10:
1-28505-709-0

ISBN 13:
978-1-28505-709-5

$r=9csc^{2}θcosθ$

$y^{2}=9x$
$r^{2}sin^{2}θ=9rcosθ$
$r=\frac{9cosθ}{sin^{2}θ}$
$r=9csc^{2}θcosθ$

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