# A vertex of an equilateral triangle is (1,1) and the opposite side is $x+y+1=0$.Find the equations of other sides?
$\begin {array} {1 1} (A)\;y-1=(2+\sqrt 3)(x-1)\: and\: (y-1)=(2-\sqrt 3)(x-1) \\ (B)\;y-1=(3+\sqrt 2)(x-1)\: and \: y-1=(3-\sqrt 2)(x-1) \\ (C)\;y+1=(2+\sqrt 3)(x+1)\: and \: (y-1)=(2-\sqrt 3)(x-1) \\ (D)\;y+1=(3+\sqrt 2)(x+1)\: and \: (y+1)=(3-\sqrt 2)(x-1) \end {array}$