You have found the trigonometry page for Rosemead High School
Here is a very feature filled calculator for PC's at: Graph Calc
Here is a site for many different freeware calculators: Freeware calculators
Peanut Graphing Program -->This freeware program will allow you to graph functions on your computer.
Graphmatica Shareware Program-->Download the program here.
Submit a question to me (Before 8 p.m. for answer on same day!)