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[" 52.A line with direction cosines prop...

[" 52.A line with direction cosines proportional to "2" ,"1,2" meets each of the lines "x=y+a=z" and "],[x+a=2y=2z" .The coordinates of each of the points of intersection are given by : "],[[" (A) ",(3a,3a,3a),(a,a,a)," (B) ",(3a,2a,3a),(a,a,a)],[" (C) ",(3a,2a,3a),(a,a,2a)," (D) ",(2a,3a,3a),(2a,a,a)]]

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