An ellipse has as semi minor axis, its focii and the angle is a right angle. Then the eccentricity of the ellipse is
As we learnt in
Coordinates of foci -
- wherein
For the ellipse
and
Length of major axis -
- wherein
Semi minor axis
so, OB = OF2
i.e b = ae
also b2 = a2(1 - e2)
a2e2 = a2(1 - e2)
e2=1/2
Option 1)
this is incorrect
Option 2)
this is correct
Option 3)
this is incorrect
Option 4)
this is incorrect
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