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(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 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.

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 = ?

The coordinates of A, B, C, D are (6, 3), (-3, 5), (4, -2) and (x, 3x) respectively. If (DeltaDBC)/(DeltaABC ) = 1/2 , find x

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 the points A(3,\ 5)a n d\ B(1,\ 4) lie on the graph of the line a x+b y=7, find the values of a\ a n d\ b

A ,\ B ,\ C are three sets of values of x : A :2,\ 3,\ 7,\ 1,\ 3,\ 2,\ 3, B :7,\ 5,\ 9,\ 12 ,\ 5,\ 3,\ 8 C :4,\ 4,\ 11 ,\ 7,\ 2,\ 3,\ 4 Which one of the following statements is correct? M e a n\ of\ A=\ Mod e\ of\ C M e a n\ of\ C=M e d i a n\ of\ B M e d i a n\ of\ B=Mod e\ of\ A M e a n ,\ M e d i a n\ a n d\ Mod e\ of\ A\ a r e\ e q u a l

If hat i+ hat j+ hat k , 2 hat i+5 hat j , 3 hat i+2 hat j-3 hat k a n d hat i-6 hat j- hat k espectively are the position vectors of points A , B , C a n d D then find the angle between the straight lines A B a n d C Ddot Deduce that A B a n d C D are collinear.