What is the transformation matrix for a reflection across the line y=xtan(60∘)y = x \tan(60^\circ)y=xtan(60∘)?
(−0.50.8660.8660.5)\begin{pmatrix} -0.5 & 0.866 \\ 0.866 & 0.5 \end{pmatrix}(−0.50.8660.8660.5)
(0.50.8660.866−0.5)\begin{pmatrix} 0.5 & 0.866 \\ 0.866 & -0.5 \end{pmatrix}(0.50.8660.866−0.5)
(0.8660.50.5−0.866)\begin{pmatrix} 0.866 & 0.5 \\ 0.5 & -0.866 \end{pmatrix}(0.8660.50.5−0.866)
(−0.8660.50.50.866)\begin{pmatrix} -0.866 & 0.5 \\ 0.5 & 0.866 \end{pmatrix}(−0.8660.50.50.866)