Вычислите sin t и cos t если 1) t= п/4 2) t= 2п/3 3)t=п 4)t=- п/6
1) t=π/4 sin π/4=√2/2 cos π/4=√2/2 2) t=2π/3 sin 2π/3=√3/2 cos 2π/3=-1/2 3) t=π sin π=0 cos π=-1 4) t=-π/6 sin (-π/6)=-sin π/6=-1/2 cos (-π/6)=cos π/6=√3/2