With a graphing utility in radian and parametric modes, enter the equations X1T = cos T and

Question:

With a graphing utility in radian and parametric modes, enter the equations X1T = cos T and Y1T = sin T and use the settings below. Tmin = 0, Tmax = 6.3, Tstep = 0.1 Xmin = −1.5, Xmax = 1.5, Xscl = 1 Ymin = −1, Ymax = 1, Yscl = 1
(a) Graph the entered equations and describe the graph.
(b) Use the trace feature to move the cursor around the graph. What do the t-values represent? What do the x- and y-values represent?
(c) What are the least and greatest values of x and y?