>>13046211precal is graphs and trig identities. You go from learning how to "solve for x" to actually learning to express certain functions as an easier and/or more relevant function. That's what fucks people up. They go from "Oh I did it! x=5!" to "Wait, y=x^4 but there's two variables and no answer wtf? And what is this e number?"
For whatever absolutely stupid reason the US has 2 algebras which are piss easy and it jumps to trig without much of an explanation.
