Question: If the co-ordinates of the points $A , B , C , D$ be (2, 3, –1), (3, 5, –3), (1, 2, 3) and (3, 5,...

Question

If the co-ordinates of the points $A , B , C , D$ be (2, 3, –1),

(3, 5, –3), (1, 2, 3) and (3, 5, 7) respectively, then the projection of $A B$ on $C D$ is

Answer 1

Since AB and CD are perpendicular, therefore projection of AB on CD is 0.

Question: If the co-ordinates of the points \(A , B , C , D\) be (2, 3, –1), (3, 5, –3), (1, 2, 3) and (3, 5,...