Sin120=Sin(180-60)=Sin60=√3/2
Sin135=Sin(180-45)=Sin45=√2/2
Sin150=Sin(180-30)=Sin30=1/2
Cos120=Cos(180-60)=Cos60=-1/2
Cos135=Cos(180-45)=Cos45=-√2/2
Cos150=Cos(180-30)=Cos30=-√3/2
Tg120=Tg(180-60)=Tg60=-√3
Tg135=Tg(180-45)=Tg45=-1
Tg150=Tg(180-30)=Tg30=-1/√3