A precast-concrete wall section is temporarily held by the cables shown. Knowing that the tension is 840 lb. in cable AB and 1200 lb. in cable AC, determine the resultant, magnitude, vector, unit vector and direction of the forces exerted by cables AB and AC on stake A. D 27 ft 16 ft. 11 ft Magnitude: Vector: Unit Vector: Direction Angles: 8 ft N Y