The polar co-ordinate of a centre of the circle r = 4.cos θ + 3.sin θ is-

1
\((5, \tan^{-1}\frac{3}{4})\)
2
\((\frac{5}{2}, \tan^{-1}\frac{3}{4})\)
3
\((\frac{5}{2}, \tan^{-1}\frac{2}{3})\)
4
\((\frac{3}{4}, \tan^{-1}\frac{2}{3})\)

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