The narrators state that circular motion and linear motion can be understood as being the same kind of motion. In what sense do you understand that to be true? What are the 3 ways to describe sine, as stated by one of the narrators in the video? Toward the end, one narrator said: "Mathematicians usually do stuff because it's nice and they they're like 'Oh yeah, it's also useful." In other words, mathematicians are often motivated by curiosity rather than practicality. What about you? Are you a person who is more motivated by curiosity and exploration or by practical application and solving real challenges? Please say a bit about that. Feel free to tell us anything else you would like us to know