Direction ratios of two lines are `a ,b ,ca n d1//b c ,1//c a ,1//a bdot` Then the lines are ______.

Direction ratios of two lines are a ,b ,c a n d1//b c ,1//c a ,1//a bdot Then the lines are ______.

Direction ratios of two lines are a ,b ,c and 1/(bc) ,1/(ca) ,1/(ab) Then the lines are ______.

Direction ratios of two lines are a,b,c and 1/bc,1/ca,1/ab. Then the lines are

If direction ratios of two lines are (a,b,c)and (b-c,c-a,a-b), find angle between them.

If the direction ratios of two lines are given by a + 2b + c = 0 and 11 bc +6ca - 14 ab = 0 . then the angle between these lines is

The direction rations of two lines are a,b,c and (b-c) , (c-a),(a-b) respectively . The angle between these lines is

If (1,-2,-2) and (0,2,1) are direction ratios of two lines, then direction cosines of a line perpendicular to both the lines are

If the direction ratios of two lines are lt a, b, c gt and lt b-c, c-a, a-b gt , find the angle between them.

If (2, 1, -1) and (1, -1, -1) are direction ratios of two lines, then the direction cosines of a line perpendicular to both the lines are