Calculus agrees with me, but I'm in a beginning trigonometry class now and totally stumped by the unit circle and determining reference points for nonstandard numbers.
For nice even denominators or anything that is easily converted to an existing reference point I get it. It's just a matter of making the established guide match t. But something such as -9pi/7 is really stumping me, and I've watched probably a dozen YouTube videos that couldn't assist.
Am I stupid? How stupid am I? I've been contemplating this for hours.