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Question
Find the direction cosines of the following line:
`(3 - x)/(-1) = (2y - 1)/2 = z/4`
Solution
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)))`
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