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Find the eccentricity of an ellipse bewe...

Find the eccentricity of an ellipse beween whose foci is 10 and that between focus and corresponding directirx is 15

Text Solution

Verified by Experts

The correct Answer is:
`(1)/(2)`
W have 2ae =10 or ae=5
and `(a)/(e)-ae=15`
`rArr(5)/(e^(2))-5=15`
`rArr(5)/(e^(2))=20`
`:. e=(1)/(2)`
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