The direction ratios of a line are 2, 6 and -9. What are its direction cosines ?

If the direction ratios of a stralight line are (1,2,2), then find its direction consines.

Answer the question A line makes angles 30^(@), 60 ^(@) and 90^(@) with positive directions of X,Y and Z-axes, repectively. Find its direction cosines.

What is the direction of acceleration?

Two towns A and B are connected by a regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20 km h~1 in the direction A to B notices that a bus goes past him every 18 min in the direction of his motion, and every 6 min in the opposite direction. What is the period T of the bus service and with what speed - (assumed constant) do the buses ply on the road?

Which vector can be asS0ciated with a plane area? And what is jts direction?

What are the direction cosines of a line which is equally inclined to the coordinate axes OX, OY and OZ ?

What do you mena by centripetal force? What is its direction?

What is the direction of acceleration of a body moving in a curved path with a constant speed?

Find the direction ratios of the line joining the points P (1, 3, -2) and Q ( -2 , 4, 0).