Muddiest point

In this unit there were a few things I found difficult,  one was remembering the unit circle in radians. It got easier as the unit went on but I could never seem to remember the order.  Also near the beginning of learning cosine, sine, tangent, cosecant, etc. I always forgot if sin was "x" or if it was "y" (same thing with cosine).  But with all the practice in the homework I started to remember cosine was "x" and sine was "y".  Overall though this unit got easier because the homework was good practice before the test.