Three polarizing disks have planes that are parallel and centered on a common axis. The direction of the transmission axis $($dashed line$)$ in each case is shown relative to the common vertical direction. An unpolarized beam of light is incident from the left on the first disk with intensity $S_0=750\frac{W}{m^2}.$ Calculate the transmitted intensity if ${}_1=25\mathrm{.}0,{}_2=33\mathrm{.}0,$ and ${}_3=40\mathrm{.}0.$

$\frac{w}{m^2}$