A) \[x-1=0,\,\,x-y=0\]
B) \[x-1=0,\,\,y-1=0\]
C) \[x-y=0,\,\,y-1=0\]
D) \[x+y-2=0,\,\,\,y-1=0\]
Correct Answer: B
Solution :
Since, the required lines make an angle \[{{45}^{o}}\] either above the line or below the line. \[\therefore \] Required slopes are \[m={{90}^{o}},\,{{180}^{o}}.\] \[\therefore \]\[(y-1)=\tan \,{{90}^{o}}(x-1)\] \[\Rightarrow \]\[x=1\] and \[(y-1)=\tan \,{{180}^{o}}(x-1)\Rightarrow y=1\]You need to login to perform this action.
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