The eccentricity of an ellipse in which distance between their focii i – InterviewSolution

1.

The eccentricity of an ellipse in which distance between their focii is 10 and that of focus andcorresponding directrix is 15 is

Answer»

Given 2ae = 10, this implies ae = 5

and a/e = 15

Dividing one over the other,

e^2 1/3

Therefore the eccentricity of the ellipse 'e' = 1/sqrt 3

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