sin(pi/3)=sqrt3/2 cos(pi/3)=1/2 tg(pi/3)=sqrt3 tg0=0 cos(3pi/2)=0 sin(pi/2)=1
2*sqrt3 3
- +2*0+8*0-6*1=(sqrt3-15)/2
2*2 2
sin(pi/3)=sqrt3/2 cos(pi/3)=1/2 tg(pi/3)=sqrt3 tg0=0 cos(3pi/2)=0 sin(pi/2)=1
2*sqrt3 3
- +2*0+8*0-6*1=(sqrt3-15)/2
2*2 2