Robotics is an interdisciplinary branch of engineering and science that includes mechanical engineering, electrical engineering, computer science, and others. Robotics deals with the design, construction, operation, and use of robots, as well as computer systems for their control, sensory feedback, and information processing.
https://en.wikipedia.org/wiki/Robotics
Robotics relates with engineering, because you cannot have robotics without engineering and building. You must know the basic idea of engineering and use in order for robotics.