A) \[\frac{2}{\sqrt{15}}\]
B) \[\sqrt{\frac{20}{3}}\]
C) \[\sqrt{\frac{8}{15}}\]
D) \[\sqrt{\frac{15}{2}}\]
E) \[\sqrt{2}\]
Correct Answer: B
Solution :
The length of perpendicular from\[(-1,2)\]to \[2x-y-1=0\]is \[\left| \frac{2(-1)-1(2)-1}{\sqrt{4+1}} \right|=\sqrt{5}\] \[\therefore \]Side of triangle \[=\frac{2}{\sqrt{3}}\times \sqrt{5}=\sqrt{\frac{20}{3}}\]
You need to login to perform this action.
You will be redirected in
3 sec
