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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 ofL, M and N respectively are

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(7, 0, 0), (0, 0, 9), (0, 4, 0)

(0, 0, 7), (0, 9, 0), (4, 0, 0)

(7, 0, 0), (0, 9, 0), (0, 0, 4)

(0, 7, 0), (0, 0, 9), (4, 0, 0)

answer is A.

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Detailed Solution

Since L is the foot of perpendicular from P on the x-axis, its y and z-coordinates are zero. So, the coordinates of L is (7, 0, 0). Similarly, the coordinates of M and N are (0, 9, 0) and (0, 0, 4), respectively.

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