The locus of a point P(x, y, z) which moves in such a way that z=7 is a

NDA 2021 Mathematics question

The locus of a point which moves in such a way that is a

Answer: (D)

The condition fixes only the -coordinate; and are free to take all real values. The set of all points is a plane at a constant distance 7

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Question ID VK-033672