Verified Answer :

Beanie4185

Start by multiplying both sides by r:

\(r = 4 \sin \theta\)
\(r^2 = 4r \sin \theta\)

Since \(r^2 = x^2 + y^2\) and \(y = r \sin \theta\), we have that

\(\bf x^2 + y^2 = 4y\)

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