A) \[\pm \frac{3}{4}\]
B) 0
C) \[\pm \,3\]
D) \[\pm \,1\]
Correct Answer: B
Solution :
Let equation of line be \[y=mx\] or \[y-mx=0\] Then applying condition for tangency, \[\left| \frac{-5-4m}{\sqrt{1+{{m}^{2}}}} \right|=5\Rightarrow 25+16{{m}^{2}}+40m=25+25{{m}^{2}}\] \[\Rightarrow 9{{m}^{2}}-40m=0\Rightarrow m=0\] or \[m=\frac{40}{9}\].You need to login to perform this action.
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