JEE MATHEMATICS MCQ: ELLIPSE

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In an ellipse the distance between the foci is 8 and the distance between the directrices is 25. The length of major axis is

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Correct option: A

10\sqrt 2

The correct answer is A (

10\sqrt 2

) because it represents the length of the major axis of the ellipse, calculated using the given distances between the foci and directrices.

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\frac{x^2}{144}+\frac{y^2}{81}=1

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\mathrm{M}

\mathrm{mM}

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\frac{{{x^2}}}{{25}} + \frac{{{y^2}}}{{16}} = 1

S

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(\sqrt{7}, 0)

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9 x^{2}+16 y^{2}=144

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x=0

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y=x

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O