/ 2 2 2 2 2 2 \
| 2*cos (x) 6*sin (x) 2*cos (x) 3*sin(x) 8*cos (x)*sin (x) 6*cos (x)*sin(x) |
|-1 - ----------- + ----------- + ---------------------------- + -------------------------- + ----------------- + ---------------------------|*cos(x)
| 2 2 2 / 2 \ 2 2 |
| 1 + sin (x) 1 + sin (x) / 2 \ 2 \1 + sin (x)/*atan(sin(x)) / 2 \ / 2 \ |
\ \1 + sin (x)/ *atan (sin(x)) \1 + sin (x)/ \1 + sin (x)/ *atan(sin(x))/
-----------------------------------------------------------------------------------------------------------------------------------------------------
/ 2 \
\1 + sin (x)/*atan(sin(x))