If the coordinates of the points `A,B,C,D be 91,2,3),(4,5,7),(-4,3,-6) and (2,9,2)` respectively then find the angle between AB and CD.

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

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

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

If A,B,C,D are (2,3,-1),(3,5,-3),(1,2,3),(3,5,7) respectively, then the angel between AB and CD, is

If the coordinates of the points A ,\ B ,\ C ,\ D\ b e\ (1,\ 2,\ 3),\ (4,\ 5,\ 7),\ (-4,\ 3,\ -6)\ a n d\ (2,\ 9,\ 2) respectively then find the angle between the lines A B\ a n d\ C Ddot

If A(8,2,0),B(4,6,-7),C(-3,1,2)and D(-9,-2,4) are four given point then find the angle between vec(AB)and vec(CD) .

Coordinates of the points A, B, C,D are (13,7), (-5,2), (7,3) and (3,7) respectively. Let AB and CD meet at P, then PA:PB is equal to

The coordinates of the points A, B, C, D are (2, a), (3,5), (3,4) and (0, 6) respectively. If the lines AC and BD be perpendicular, then a = ?

If three points are A(-2,1)B(2,3), and C(-2,-4), then find the angle between AB and BC .

ABCD is a parallelogram.If the coordinates of A,B,C are (2,3),(1,4) and (0,-2) respectively,find the coordinates of D.