Problem 12-2 A boom AB is supported in by a hinge A and a cable which runs from C over a small pulley at D as shown in Fig. P-346. Compute the tension T in the cable and the horizontal and vertical components of the reaction at A if the cable pulls the boom AB into a position at which it is inclined at 30° above the horizontal. The loads remain vertical. Neglect the size of the pulley at D.