Вычислите синусы, косинусы и тангенсы углов 120, 135 и 150 градусов.

[latex]sin(120) =\frac{\sqrt{3}}{2}[/latex] [latex]cos(120)=-\frac{1}{2}[/latex] [latex]tg(120)=-\sqrt{3}[/latex]   [latex]sin(135) = \frac{\sqrt{2}}{2}[/latex] [latex]cos(135) = -\frac{\sqrt{2}}{2}[/latex] [latex]tg(135)=-1[/latex]   [latex]sin(150)=\frac{1}{2}[/latex] [latex]cos(150)=-\frac{\sqrt{3}}{2}[/latex] [latex]tg(150)=-\frac{\sqrt{3}}{3}[/latex]      

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