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жихарев
@жихарев
July 2022
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arcsin0+arcsin1+arcsin (-1)=?
ctg (arccos1+2arctg (-корень из 3/3)=?
sin^2 (arctg1/корень из 3 +arccos1/2)=?
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dasdasfa
1) =0+ 90+(-90)=0(градусов)
2) =ctg(0+2*(-30))=ctg(-60=-1/√3=-√3/3
3)=sin^2 (30+60)=sin^2 (90)=1
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2) =ctg(0+2*(-30))=ctg(-60=-1/√3=-√3/3
3)=sin^2 (30+60)=sin^2 (90)=1