Find the angle between the lines whose direction ratios are `a,b,c and b-c,c-a,a-b`.

Find the angle between the lines whose direction ratios are proportional a,b,c and b-c,c-a,a-b.

31.If the angle between the lines whose direction ratios are 2,-1,2 and a,3,5 be 45^(@) , then a=(A)1(B)2(C)3(D)4

Find the angle between the pairs of lines with direction ratio proportional to: a ,\ b ,\ c\ a n d\ b-c ,\ c-a ,\ a-bdot

Find the angle between the pairs of lines with direction-ratios : (i) lt 5, -12, 13 gt , lt -3, 4, 5 gt (ii) lt a,b,c gt , lt b, -c, c - a , a - b gt

Find the angle between the lines x=a\ a n d\ b y+c=0.

Find the area of the triangle whose vertices are (a,b+c),(a,b-c) and (-a,c) ?

The line joining the points (-2,1,-8 and (a,b,c) is parallel to the line whose direction ratios are 6,2, and 3. Find the values of a,b and c