Direction ratios of twolines are `a ,b ,ca n d1//b c ,1//c a ,1//a bdo – InterviewSolution

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1.	Direction ratios of twolines are `a ,b ,ca n d1//b c ,1//c a ,1//a bdot`Then the lines are ______.
Answer» Since `(a)/((1//bc))=(b)/((1//ca))=(c)/((1//ab))`, lines are parallel.

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