Question

Find the direction cosines of the following line:

`(3 - x)/(-1) = (2y - 1)/2 = z/4`

Answer 1

The given line is `(x - 3)/1 = (y - 1/2)/1 = z/4`

Its direction ratios are <1, 1, 4>

Its direction cosines are `(1/(3sqrt(2)), 1/(3sqrt(2)), 4/(3sqrt(2)))`