  High precision data of lepton angular distributions for $\gamma^*/Z$
production in $pp$ collisions at the LHC, covering broad ranges of dilepton
transverse momenta ($q_T$) and rapidity ($y$), were recently reported. Strong
$q_T$ dependencies were observed for several angular distribution coefficients,
$A_i$, including $A_0 - A_4$. Significant $y$ dependencies were also found for
the coefficients $A_1$, $A_3$ and $A_4$, while $A_0$ and $A_2$ exhibit very
weak rapidity dependence. Using an intuitive geometric picture we show that the
$q_T$ and $y$ dependencies of the angular distributions coefficients can be
well described.
