The length of subnormal at `(4,2)` to an ellipse is `3`.Then its eccentricity is

The length of subtangent corresponding to the point (3,12/5) on the ellipse is 16/3. Then the eccentricity is

The length of the latusrectum of an ellipse is (18)/(5) and eccentricity is (4)/(5) , then equation of the ellipse is . .

The co-ordinates of a focus of an ellipse is (4,0) and its eccentricity is (4)/(5) Its equation is :

Find the length of the latus rectum of the ellipse if the eccentricity is (1)/(2) and the distance between the foci and the centre of the ellipseis 4.

The length of the latus rectum of an ellipse is 1/3 of the major axis. Its eccentricity is

For equation of the curve whose subnormal is constant, then (a) its eccentricity is 1 (b) its eccentricity is sqrt(2) (c) its axis is the x-axis (d)its axis is the y-axis.

The latus rectum of an ellipse is half of its minor axis. Its eccentricity is :

If distance between foci of an ellipse equals its latus-rectrum , then its eccentricity is