A rod AB, hinged at A and attached at B to cable BD, supports the loads shown. Knowing that d = 150 mm, determine (a) the tension in cable BD, (b) the reaction at A. (A is a hinge on the ceiling; end B is 300 mm to the right of A and 100 mm below the ceiling; the cable runs from B up to D on the ceiling, d = 150 mm to the right of A; the rod carries 90 N downward loads at 100 mm and 200 mm horizontally from A.) (answers in N)