1.

The tangent at a point P(acos theta,bsin theta) on the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 meets the auxillary circle in two points. The chord joining them subtends a right angle at the centre. Find the eccentricity of the ellipse:

Answer»


ANSWER :`(SIN alpha+beta)/(sin (alpha+beta))`


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