There is no required calculator for this class. However, for in-class work and homework, you will need a scientific calculator with trig functions. A graphing calculator will work, but is not required.
If you are shopping for a calculator, I recommend the TI-36x Pro. It has a very intuitive display, can perform basic Calculus and Algebra functions, and has many of the constants that you will need in Physics class pre-programmed. Cost is typically around $30. THIS CALCULATOR IS NOT REQUIRED. Any scientific calculator with trig functions will work, and there are some scientific calculator available in the classroom.