This past unit was a little harder for me to understand.  once again I found that participating in class discussion and on homework assignments really helps me grasp the concepts being taught.  My personal sticking point was graphing the tangent and cotangent graphs.  The fact that they have a different period threw me off and the line is different.  I am still not 100% confident in graphing these but I would say a strong 90% after getting some help.