A) \[2x+y-1=0\]
B) \[x+2y-1=0\]
C) \[2x+y+1=0\]
D) None of these
Correct Answer: C
Solution :
\[{{m}_{1}}=\tan 45{}^\circ =1,\] \[{{m}_{2}}=3\] Slope of tangent \[=\frac{3\pm 1}{1\mp 3}=-2\]or \[\frac{1}{2}\] Tangent is \[y=-2x+\frac{2}{-2}\]or \[2x+y+1=0\].You need to login to perform this action.
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