If three vectors have equal magnitude i.e. $A=B=C$, then the angle between $\vec{A}$ and
$\overrightarrow{\mathrm{C}}$ is $^{\prime} \alpha^{\prime}$. If $\overrightarrow{\mathrm{A}}+\overrightarrow{\mathrm{B}}+\overrightarrow{\mathrm{C}}=0$, then the angle between $\overrightarrow{\mathrm{A}}$ and $\overrightarrow{\mathrm{C}}$ is ' $\beta^{\prime}$, then $\frac{\alpha}{\beta}$ is