Show that the straight lines L1=(b+c)x+ay+1=0, L2=(c+a) x+by+1=0 and L – InterviewSolution

1.	Show that the straight lines L1=(b+c)x+ay+1=0, L2=(c+a) x+by+1=0 and L3=(a+b)x+cy+1=0 are concurrent.
Answer» Show that the straight lines $L_{1} = (b + c) x + a y + 1 = 0, L_{2} = (c + a) x + b y + 1 = 0$ and $L_{3} = (a + b) x + c y + 1 = 0$ are concurrent.

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