Алгебра 10 класс..
1)arcsin(1/2)+arcsin√2/2-arcsin(-√3/2)
2)ascsin(√2 sin П/6)
3)sin(arccos(-1)+arcsin√3/2)
1)arcsin(1/2)+arcsin√2/2-arcsin(-√3/2)
2)ascsin(√2 sin П/6)
3)sin(arccos(-1)+arcsin√3/2)
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2) =arcsin(кореньиздвух*1/2)=pi/4
3) =sin(pi+pi/3)=-sin(pi/3)=-кореньизтрех/2.