Question

Let A,B,C be the feet of perpendiculars drawn from P(3,4,5) on XY,YZ,ZX planes respectively, then Coordinates of A,B and C will be .

• A. $(5,4,0),(0,4,3),(3,0,5)$
• B. $(3,4,0),(0,3,5),(4,0,5)$
• C. $(3,4,0),(0,4,5),(3,0,5)$
• D. $(3,5,0),(0,4,5),(3,0,4)$

Answer 1

The correct option is C $(3,4,0),(0,4,5),(3,0,5)$

'A' is the foot of perpendicular from P on the XY plane, then the Z-coordinate of it is zero. Hence, the coordinates of A will be (3,4,0). Similarly, the coordinates of B and C will be (0,4,5),(3,0,5), respectively.