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[" 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 lines "x=y+a=z" and "],[" points on intersection are given by- (AlEEE- - "2004" ) "],[" (1) "(3a,3a,3a),(a,a,a)],[" (2) "(3a,2a,3a),(a,a,a)],[" (3) "(3a,2a,3a),(a,a,2a)],[" (4) "(2a,3a,3a),(2a,a,a)]

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