I spent both some wakeful time last night and all of my study time today working on my parabola problem. It’s turning out to be an ideal project for this point in my review, as I’m using all the subjects I’ve been learning—algebra, analytic geometry, conics, and trigonometry—plus a bit of remembered calculus.
One thing I did today was some research on inverse trigonometric functions. In the process, I discovered a resource called LibreTexts, which offers a largish selection of free math textbooks. I found it useful to look at a couple of different treatments of the same topic.
more power to ya’