ItsFox4689 ItsFox4689 19-03-2020 Engineering contestada The controlled variable in a closed-loop system is the direction of a robot arm. Initially, it is at 50o; then it is commanded to go to 25o. What is the error when the arm position is at 15o?a. 15 deg b. 25 deg c. 10 deg d. 35 deg