The co-ordinates of a point H are (-2, 3, -4). Find
(i) The co-ordinates of the foot of perpendicular from this point to ZX-plane.
(ii) The co-ordinates of the foot of perpendicular from this point to the z-axis.
(iii) The length of perpendicular from this point to XY-plane.
Solution not provided.
Ans. (i) (-2, 0, -4)
(ii) (0, 0, -4)
(iii) 4