If A, B, C, D are the points (2, 3, -1), (5, 2, 3), (4, 3, -5) and (-2, 1, -8) respectively, then find the projection of AB on CD.

If A, B, C, D are the points (6,3,2), (3,5,7), (2,3,-1) and (3,5,-3) respectively, then find the projection of overline(AB)onoversetleftrightarrow(CD)

If the coordinates of the points A, B, C, D be (1, 2, 3), (4, 5, 7), (-4, 3, -6) and (2, 9, 2) respectively, then find the angle between the lines AB and CD.

If the coordinates of the points A, B, C, D be (1, 2, 3), (4, 5, 7), (– 4, 3, – 6) and (2, 9, 2) respectively, then find the angle between the lines AB and CD.

If the coordinates of the points A, B, C, D be (1, 2, 3) , (4, 5, 7) , ( 4, 3, 6) and (2, 9, 2) respectively, then find the angle between the lines AB and CD.

If A = (-2, 3, 4), B = (-4, 4, 6), C = (4, 3, 5), D = (0, 1, 2) then the projection of AB on CD is

If the co-ordinates of the points A, B, C, D be (1,2,3),(4,5,7) (-4,3,-6) and (2,9,2) respectively, then find the angle between the lines AB and CD

A(1, -2, 4), B(5, -1, 7), C(3, 6, -2) and D(4, 5, -1) are given vectors. Then the projection of vec(AB) on vec(CD) is ……………