cos(pi/3)cosa+sin(pi/3)sina+cos(pi)cosa-sin(pi)sina-cosa=
=0.5cosa+(√3/2)sina-cosa-0-cosa=√3/2*sina-1.5cosa
cos(pi/3)cosa+sin(pi/3)sina+cos(pi)cosa-sin(pi)sina-cosa=
=0.5cosa+(√3/2)sina-cosa-0-cosa=√3/2*sina-1.5cosa