Find the angle between the vectors whose direction cosines are proportional to `2,3,-6` and `3,-4,5.`

The angle between the lines whose direction cosines are proportional to (1,2,1) and (2,-3,6) is

The acute angle between the lines whose direction cosines are proportional to 3,-1,2 and 2,1,-3 is

What is the angle between the lines whose direction cosines are proportional to (2,3,4) and (1,-2,1) respectively?

What is the angle between the lines whose direction cosines are proportional to (2,3,4) and (1,-2,1) respectively

Find the angle between the vectors with direction ratios proportional to 1,-2,1 and 4,3,2.

Find the angle between the vectors with direction ratios proportional to 4,-3,5 and 3,4,5.

Find the angle between the vectors with direction ratios proportional to 4,-3,5a n d3,4,5.

Find the acute angle between the lines whose direction ratios are proportional to 2:3:6 and 1:2:2.

Find the angle between the vectors with direction ratios proportional to 1,-2,1 and 4,3, 2.