$$\left. \begin{array} { l } { A B = } \\ { A C = } \\ { \quad \begin{array} { l } { } \end{array} } \end{array} \right.$$
$$eABs*es*eACcongs*eangleBc*eQt*e*tBy*s^2*d^4*o*n^2*g^2*a*l$$