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📐 Mathematics  ·  Introduction to Three Dimensional Geometry  ·  JEE

A point P lies on the x-axis and is at distance 5 from the point (0, 3, 4). The coordinates of P are:

Answer: (0, 0, 0) only.

  • A (5, 0, 0) or (−5, 0, 0)
  • B (3, 0, 0) or (−3, 0, 0)
  • C No such point exists
  • D (0, 0, 0) only

Correct answer: D. (0, 0, 0) only

Explanation: With P = (x, 0, 0), x² + 9 + 16 = 25 gives x² = 0, so the origin is the only such point.

zxyOP(x, y, z)first octant:x>0, y>0, z>0

Concept context

Coordinate axes and planes in space, octants, distance between two points, and the section formula

Read the full Introduction to Three Dimensional Geometry notes →