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Question: The vertex of an equilateral triangle is (2,–1) and the equation of its base in $x+2y=1$. The length of its sides is



1) $4/\sqrt{15}$
2) $2/\sqrt{15}$
3) $4/3\sqrt{3}$
4) $1/\sqrt{5}$
Solution: Explanation: No Explanation
Distance between two lines Perpendicular distance of the line from a point Position of point w.r.t. line

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