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)`.

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(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. a) (pi)/(6) b) (pi)/(4) c) (pi)/(3) d) 0

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 AB and CD.

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 A(3,2,-4),B(4,3,-4),C(3,3,3) and D(4, 2,-3) are given then find the projection of vec(AD) on vec(AB)xx vec(AC) .

Let A(-2, 0, 3), B(0, 3, -3), C(3, 3, 5) and D(5, 4, 3) be four given points, find the acute angle between the lines AB and CD.

If A (1,2,3), B (-1,2, -3), C (1 , -2, 3) and D (-1, -2, -3) are points in space, then find the angle between the directed lines vec(AB) and vec(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 line AB and CD.

If A(4,8,12), B(2,4,6), C(3,5,4) and D(5,8,5) are four points, show that the lines vec(AB) and vec(CD) intersect.

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.