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3x + 4y = 12 sqrt2 is the tangent to the...

`3x + 4y = 12 sqrt2` is the tangent to the ellipse `x^2/a^2 + y^2/9 = 1` then the distance between focii of ellipse is-

A

`2sqrt5`

B

`2sqrt7`

C

`2sqrt11`

D

`2sqrt(13)`

Text Solution

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The correct Answer is:
B
NA
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