Calculate the diffraction angles $(2)$ of beta brass polycrystal alloy from $2=0$ to $2=130.$ Crystal structure of beta brass given below is cubic. Chemical composition of beta brass alloy is $50\%Cu-50\%Zn,$ lattice parameter, $a_{\text{@}}$ of cubic beta brass $=2\mathrm{.}955$A and $=1\mathrm{.}54A.$