Помогите!!!!! вычислите:
Sin(7п/4)*сos(7п/6)*tg(5п/3)*сtg (4п/3)=-√2/2*√2/2*√3*√3/3=-1 sin (7п/4)=-√2/2 сos(7п/6)=√2/2 tg(5п/3)=√3 сtg (4п/3)=√3/3