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Find the equation of an ellipse the dist...

Find the equation of an ellipse the distance between the foci is 8 units and the distance between the directrices is 18 units.

A

`5x ^(2) - 9y ^(2) =180`

B

`9x ^(2) + 5y ^(2) =180`

C

`x ^(2) +9y ^(2) =180`

D

`5x^(2) + 9y^(2) =180`

Text Solution

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The correct Answer is:
D
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TARGET PUBLICATION-CIRCLE AND CONICS -CRITICAL THINKING
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