Fill in the Blanks:
If C is the foot of perpendicular from a point P(3,4,-6) on the Z-axis, then the directed length OC is equal to …………

The foot of the perpendicular from the point (2, 4) upon x + y= 4 is:

find the foot of perpendicular drawn from the point (2,-3,5) on the plane 3x+4y-2z=20

Find the length and the foot of the perpendicular from the point (7, 14, 5) to the plane 2x+4y-z=2 .

Find the length and the foot of perpendicular from the point (1,3/2,2) to the plane 2x-2y+4z+5=0.

The perpendicular distance of the point P (3, 4) from the y-axis is :

Find the coordinates of the foot of the perpendicular drawn from the point (2,3) to the line y=3x+4

Find the length of perpendicular from the point (5,4,-1) on the line (x-1)/(2)=y/9=z/5

Find the equation of a line passing through the points A(0, 6, -9) and B(-3,-6,3). If D is the foot of the perpendicular drawn from a point C(7,4,-1) on the line AB, then find the coordinates of the point D and the equation of line CD.