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

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

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

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) .

Find the equation of the plane determined by the points A(3,1,2),B(5,2,4) and C(1,1,6) and hence find the distance between the plane and the point P(6,5,9).

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.