A) \[x=0,\ \ 2mx+({{m}^{2}}-1)\ y=0\]
B) \[y=0,\ \ 2mx+({{m}^{2}}-1)\ y=0\]
C) \[y=0,\ \ 2mx+(1-{{m}^{2}})\ y=0\]
D) None of these
Correct Answer: B
Solution :
Angle between both the lines is \[{{\tan }^{-1}}m\pm {{\tan }^{-1}}m={{\tan }^{-1}}\frac{2m}{1-{{m}^{2}}}\] or\[{{\tan }^{-1}}0\] Therefore equation of lines are\[y=0\], \[y=\frac{2mx}{1-{{m}^{2}}}\].
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