The frame ACD is hinged at A and D and is supported by a cable that passes through a ring at B and is attached to hooks at G and H. If the tension in the cable is 1125 N (thus 1125 N in section BG and 1125 N in section BH), determine: a) the resultant force acting at point B from the cable (in vector notation) b) the moment of the forces around point A (in vector notation)