offshore oil platform. The crane exerts vertical $\backslash (75-\backslash$mathrm$\{$kN$\}\backslash )$ forces on the truss at $\backslash ($ B$,$ C $\backslash ),$ and $\backslash ($ D $\backslash ).$ You can model the support at $\backslash ($ A $\backslash )$ as a pin support and model the support at $\backslash ($ E $\backslash )$ as a roller support that can exert a force normal to the dashed line but cannot exert a force parallel to it$.$ The angle $\backslash (\backslash$alpha$=45^\{\backslash$circ$\}\backslash ).$ Determine the axial forces in the members of the truss. solve comp;ety with each step