Let "`S,S'`" be the foci of an ellipse.If "`/_BSS^(1)=theta`" then its eccentricity is (where 'B' is an end point of minor axis)

Let S and S' are the foci of an ellipse whose eccentricity is (1)/(sqrt(2)) ,B and B' are the ends of minor axis then SBS'B' form is

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

Let S and S'' be the fociof the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 whose eccentricity is e. P is a variable point on the ellipse. Consider the locus the incenter of DeltaPSS'' The eccentricity of the locus of the P is

"S and "S^(')" are the foci of an ellipse whose eccentricity is "(1)/(sqrt(2))"."B" and "B^(')" are the ends of minor axis then "SBS'B'" is (1) Parallelogram (2) Rhombus (3) Square (4) Rectangle"

If the distance between the foci of an ellipse is equal to length of minor axis, then its eccentricity is

Let S(-12,5) and S'(-12,5) are the foci of an ellipse passing through the origin.The eccentricity of ellipse equals -

if the major axis of an ellipse is three times the length of its minor axis , its eccentricity , is

If the latus rectum of an ellipse with major axis along y-axis and centre at origin is (1)/(5) , distance between foci = length of minor axis, then the equation of the ellipse is