2 sin (x)*(1 + cos(x)) -cos(x) + -------------------- 2 1 - (1 + cos(x)) ------------------------------ ___________________ / 2 \/ 1 - (1 + cos(x))
/ 2 2 2 \ | sin (x) 3*(1 + cos(x)) *sin (x) 3*(1 + cos(x))*cos(x)| |1 - ----------------- - ----------------------- + ---------------------|*sin(x) | 2 2 2 | | 1 - (1 + cos(x)) / 2\ 1 - (1 + cos(x)) | \ \1 - (1 + cos(x)) / / -------------------------------------------------------------------------------- ___________________ / 2 \/ 1 - (1 + cos(x))