This software program is designed for students having completed high school algebra and geometry. From Menu #1 students will first review Right Triangle Geometry, followed by the study of the Unit Circle, Radians & Degrees, Reference Angles, the six trig functions, Amplitude, Period, Phase Shift, and Inverses. From Menu #2 students will learn the formulas and applications for the Length of an Arc, Conversion Factors, Angular Velocity, Linear Velocity, Area of a Circular Sector, and Area of a Circular Segement. The Vocabulary section provides the student with a quick click review of key topics. The program concludes with a 30-question test which is printable with or without solutions. Available for immediate download.