The directions rations of two lines are 3,2,-6 and , 1,2,2 respectively . The acute
angle between these lines is

If the direction ratios of two lines are 2, -3, 6 and 1, -2, 2 respectively then the angle between the 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

The diection ratios of two lines are proportional to (2,3,-6) and (3,-4,5), then the acute angle between them is

If the direction ratios of two lines are (1,2,4) and (-1,-2,-3) then the acute angle between them is

If the direction cosines of any two lines are (-2/3, 1/3, 2/3), (3/5, 4/5, 0) respectively, then the angle between those two lines is

If the direction cosines of two lines are proportional to 2,3,-6 and 3 ,-4,5, then the acute angle between then

If the direction rations of two lines are given by 3lm-4ln+mn = 0 and l + 2m + 3n = 0 then the angle between the lines is

If direction-cosines of two lines are proportional to 4,3,2 and 1, -2, 1, then the angle between the lines is :

If the d.R.s of two lines are 1,-2,-2 and 2,-2,1 , then the measures of the acute angle between them is

If direction ratios of two lines are 2,-6,-3 and 4,3,-1 then direction ratios of a line perpendicular to them are