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in Geometry by (123k points)
The direction consines of a line which lies in XZ-plane and making an angle of `30^(@)` with positive Z-axis are
A. `0,1/2,pm(sqrt(3))/2`
B. `(sqrt(3))/2 , 0,pm1/2`
C. 1,0,0
D. `pm1/2,0,(sqrt(3))/2`

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