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