EllipseHardBloom L3
Question
If the line joining foci subtends an angle of $90^{\circ}$ at an extremity of minor axis then the eccentricity of the ellipse is:
Options
A.$\frac{1}{\sqrt{3}}$
B.$\frac{1}{\sqrt{2}}$
C.$\frac{1}{2}$
D.none of these
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