If the lines joining the foci of the ellipse `(x^(2))/(a^(2))+(y^(2))/(b^(2))=1`, where agtb and an extermity of its minor axis are inclined at an angle `60^(@)`, then the eccentricity of the ellipse is

If the lines joining the focii of the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 , where agtb and an extermity of its minor axis are inclined at an angle 60^(@) , then the eccentricity of the ellipse is

S and T are the foci of the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 and B is an end of the minor axis.If STB is an equilateral triangle,the eccentricity of the ellipse is e then find value of 4e

If S and S' are two foci of the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 and B is and end of the minor axis such that Delta BSS' is equilateral,then write the eccentricity of the ellipse.

If the length of the major axis of the ellipse ((x^(2))/(a^(2)))+((y^(2))/(b^(2)))=1 is three times the length of minor axis, its accentricity is

the eccentricity of an ellipse (x^(2))/(a^(2))+(y^(2))=1 whose latus rectum is half of its minor axes , is

If the lines joining the foci of an ellipse to an end of its minor axis are at right angles , then the eccentricity of the ellipse is e =

Pa n dQ are the foci of the ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 and B is an end of the minor axis. If P B Q is an equilateral triangle, then the eccentricity of the ellipse is 1/(sqrt(2)) (b) 1/3 (d) 1/2 (d) (sqrt(3))/2