___ /pi \ \/ 3 cos|-- + x| + -----*sin(x) \3 / 2
0.866025403784439*sin(x) + cos(pi/3 + x)
/ pi\ ___ 2*cos|x + --| + \/ 3 *sin(x) \ 3 / ---------------------------- 2
/pi + 3*x\ ___ 2*cos|--------| + \/ 3 *sin(x) \ 3 / ------------------------------ 2
cos(x) ------ 2