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[" Ton "[" Find the condition that the t...

[" Ton "[" Find the condition that the three points whose position vectors are "A=ahat i+bj+],[B=hat i+chat j" and "C=-hat i-hat j" are collinear."],[" If "A,B" and "C" are collinear if "bar(AB)=lambdabar(BC)" ."],[" Comparing,we get,"],[c=0,1-a=-2 lambda" and "b=lambda rArr a-2b=1]]

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