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The direction ratios of the line whose direction angles are $\frac{π}{3}, \frac{π}{3}, \frac{π}{4}$ , are

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a

1:1:2

b

1:1:2

c

1:2:2

d

1:2:22

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detailed solution

Correct option is B

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

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