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The sum of the distances of any point on...

The sum of the distances of any point on the ellipse `3x^2 + 4y^2 = 12` from its directrix is

A

`(4)/(5)`

B

`4sqrt(5)`

C

8

D

None of these

Text Solution

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The correct Answer is:
D

`y'=c cosximpliesy'=y cotx`
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