Here is a graph of the function y = r(t) = tan(cos(πt) + .5) + 2:
ibb.co/9qQjRvJ (Graph image)
Estimate the total area under this curve on the interval [0, 12] with a Riemann sum uses 36 equal subdivisions and circumscribed rectangles. Hint: use symmetry to make this problem easier. You get Area =
A. 49.914
B. 86.634
C. 28.044
D. 14.439
E. 57.340