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A variable plane at a distance of 1 unit...

A variable plane at a distance of 1 unit from the origin cuts the coordinate axes at A,B and C satisfies the relation `1/x^2+1/y^2+1/z^2= k`, then the value of k is :

A

9

B

3

C

44440

D

44256

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The correct Answer is:
A
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HIMALAYA PUBLICATION-THREE DIMENSIONAL GEOMETRY-QUESTION BANK
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