Let L, M, N be the feet of the perpendiculars drawn from a point P(7, 9, 4) on the x, y and z-axes respectively. The coordinates of L, M and N, respectively, are
(7, 0, 0), (0, 9, 0), (0, 0, 4)
(0, 0, 7), (0, 9, 0), (4, 0, 0)
(0, 7, 0), (0, 0, 9), (4, 0, 0)
(7, 0, 0), (0, 0, 9), (0, 4, 0)
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