An ellipse is sliding along the co-ordinate axes. If the foci of the ellipse are and then area of the director circle of the ellipse (in sq.units) is |
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a) |
b) |
c) |
d) |

An ellipse is sliding along the co-ordinate axes. If the foci of the ellipse are and then area of the director circle of the ellipse (in sq.units) is |
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a) |
b) |
c) |
d) |

1 Answer

127 votes

**(d)**

Since axis and -axis are perpendicular tangents to the ellipse. lies on the director circle and midpoint of foci is centre of the circle.

Hence, radius

The area is units

127 votes

127