yncybecket replied to your photo “WAIT WHAT IS THAT ZERO THING”
its theta and im p sure its just identifying the angle like you need to find the sin of the angle marked theta in the triangle. do you know the soh cah toa acronym? sin = line opposite the angle over the hypotenuse of the triangle
so it's just sort of like an x??? alright, that makes sense. thanks!!












