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if the minor axis of ellipse subtends 90 degree angle at foci , find its eccentricity?

 Nov 8, 2017

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The only way the minor (or major) axis of an ellipse can subtend an angle of 90° at the focii is if the ellipse is a circle! This has an eccentricity of 0. 

 Nov 8, 2017
 #1
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The only way the minor (or major) axis of an ellipse can subtend an angle of 90° at the focii is if the ellipse is a circle! This has an eccentricity of 0. 

Alan Nov 8, 2017

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