if 0<x, y<\(\pi\) and cosx+cosy-cos(x y)=\(\frac{3}{2}\),Then sin x+cos y=?
\(\frac{1}{2}\)
\(\frac{1+\sqrt3}{2}\)
\(\frac{\sqrt3}{2}\)
\(\frac{1-\sqrt3}{2}\)
The graph shown below depicts: