A) sides of a triangle
B) concurrent
C) parallel
D) None of these
Correct Answer: B
Solution :
Given, lines are\[3x+4y+6=0\] \[\sqrt{2}x+\sqrt{3}y+2\sqrt{2}=0\] and \[4x+7y+8=0\] \[\therefore \]\[\left| \begin{matrix} 3 & 4 & 6 \\ \sqrt{2} & \sqrt{3} & 2\sqrt{2} \\ 4 & 7 & 8 \\ \end{matrix} \right|=3(8\sqrt{3}-14\sqrt{2})\] \[-4(8\sqrt{2}-8\sqrt{2})+6(7\sqrt{2}-4\sqrt{3})\] \[=24\sqrt{3}-42\sqrt{2}-0+42\sqrt{2}-24\sqrt{3}\] \[=0\] Hence, given lines are concurrent.
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