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

The major axis of an ellipse is twice its minor axis. Find its eccentricity.

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

Let S, S' be the focil and BB' be the minor axis of the ellipse (x^(2))/(a^(2)) + (y^(2))/(b^(2)) = 1. If angle BSS' = theta , then the eccentricity e of the ellipse is equal to

Let S, S' be the focil and BB' be the minor axis of the ellipse (x^(2))/(a^(2)) + (y^(2))/(b^(2)) = 1. If angle BSS' = theta , then the eccentricity e of the ellipse is equal to

If the latus-rectum of the ellipse is half the minor axis, then its eccentricity is :