Let `S, S^(')` are the focii and `BB^(')` be the minor axis of an ellipse. If `angleBSS^(')=theta` then its eccentricity is

If the minor axis of an ellipse subtends an angle 90^(@) at each focus then the eccentricity of the ellipse is

If the minor axis of an ellipse subtends an angle 60^(@) at each focus then the eccentricity of the ellipse is

The major axis of an ellipse is three times the minor axis, then the eccentricity is

Let S, S' be the focii and B, B' be the minor axis of the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 if angle BSS'= theta and eccentrictiy of the ellipse is e, then show that e=cos theta

If the minor axis of an ellipse subtends an angle 60^(@) at each focus then e =

The distance between the focii is equal to the minor axis of an ellipse then its eccentricity is

Let S and S^(1) be the foci of an ellipse . At any point P on the ellipse if SPS^(1) lt 90 ^(@) then its eccentricity :

If the length of the major axis of an ellipse is four times the length of its minor axis, then it's eccentricity is

The latus rectum of an ellipse is 1/3 of the major axis. It's eccentricity is