Determine the amplitude and period of the following function. Then, graph the function y = 3 cos xX The amplitude is (Simplify your answer ) ISE Lols The period is (Type an exact answer using it as needed. Use integers or fractions for any numbers in the expression.) Use the graphing tool to graph the function. Click to enlarge graph For any answer boxes shown with the grapher, type an exact answer. Type the word pi to insert the symbol it as needed.)