FB is a 700 lb tension force in the cable AB and Fc is 900 lb force in cable AC. a. What are the position vectors of AB and AC? b. What are the unit vectors of AB and AC? c. What is the resulting force acting on the flag pole? d. What are the direction cosine angles of this resulting force? e. By using the definition of a Dot Product, determine the angle between Fa and Fc. 6 m 2 m B 3 m. FB 3 m A Fc 6 m