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# The polar equation of the circle with center $\bigg( 2, \large\frac{\pi}{2}\bigg)$ and radius 3 units is :

$\begin {array} {1 1} (a)\;r^2+4r \cos \theta=5 & \quad (b)\;r^2+4r \sin \theta=5 \\ (c)\;r^2-4r \sin \theta=5 & \quad (d)\;r^2-4r \cos \theta=5 \end {array}$
Can you answer this question?

$(c)\;r^2-4r \sin \theta=5$
answered Nov 7, 2013 by