sina=-0,3,
cosa=sqrt(1-0,09)=sqrt(0,91)=sqrt(91)/10
tga=-3/sqrt(91)=-3sqrt(91)/91
ctga=-sqrt(91)/3
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sina=-0,3,
cosa=sqrt(1-0,09)=sqrt(0,91)=sqrt(91)/10
tga=-3/sqrt(91)=-3sqrt(91)/91
ctga=-sqrt(91)/3