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in Three-dimensional geometry by (36.3k points)

A variable plane at a distance of 1 unit from the origin cuts the co-ordinate axes at A, B and C. If the centroid G(x, y, z) of ΔABC satisfies the relation 1/x2 + 1/y2 + 1/z2 = k, the value of k is

(a) 9

(b) 3

(c) 1

(d) 1/3

1 Answer

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Best answer

Answer is (a) 9

Equation of any plane passing through A, B, C is

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