The direction ratios of the line whose direction angles areπ3,π3,π4, are
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a
1:1:2
b
1:1:2
c
1:2:2
d
1:2:22
answer is B.
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Detailed Solution
If α,β,γ are the angles made by a line ‘L’ with the coordinate axes in the positive direction, then direction cosines of that line are cosα,cosβ,cosγHence, the direction cosines whose direction angles π3,π3,π4are cosπ3,cosπ3,cosπ4The direction ratios are 1,1,2