Problem $1\mathrm{.}2-19$ A $150-lb$ rigid bar $AB,$ with frictionless rollers at each

end, is held in the position shown in the figure by a continuous cable

CAD. The cable is pinned at $C$ and $D$ and runs over a pulley at $A.$

$($a$)$ Find reactions at supports A and $B.($Bx$=65,$ A$=57\mathrm{.}7)$

$($b$)$ Find the force in the cable. $($T$=71\mathrm{.}6)$