Direction ratio of two parallel lines are.......

The direction ratios of two parallel lines are 4,-3,-1 and lambda+mu,1+mu,2. The value of the pair (lambda,mu) is

If the direction ratios of two parallel lines are 4, -3, -1 and p + q, 1 + q , 2, then find the values of p and q.

If a,b,c and 1/(bc), 1/(ca), 1/(ab) are the direction ratio of two lines, then the lines are

Transversal to two parallel lines:

Direction ratios of two lines are 3, -2, k and -2k, 4 Find k, if the lines are perpendicular to each other.

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 satisfy the relations 2a-b+2c=0 and ab+bc+ca=0 . Then the angle between two lines 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

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