This packet is amazing, there's 6+ double sided worksheets that cover circular functions, finding the exact value when given degrees and radians. Plotting the function value on the Unit Circle. Periodic functions and determining the period when given the graphed function. These really are amazing, and my whole math department uses these instead of the books. There is a quiz with an answer key. Some of the worksheets have an answer key too. There's also an SAT prep/review sheet too. Please, check out my other worksheets.