The equation of the circle passing through the foci of the ellipse, and having centre at (0,3) is
A
x2+y2−6y−7=0
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B
x2+y2−6y+7=0
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C
x2+y2−6y−5=0
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D
x2+y2−6y+5=0
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Solution
The correct option is Ax2+y2−6y−7=0 Co-ordinates of foci (ae,0)(−ae,0) e=√1−916e=√7 Co-ordinate of foci are (√7,0),(−√7,0)R=√7+9=4(x−0)2+(y−3)2=42x2+y2−6y+9=16x2+y2−6y−7=0