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Rus98
@Rus98
July 2022
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В треугольнике авс угол с равен 90 градусов сн высота ан=20, tgА=3/4. Найдите вн
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pomoshnik09
в Δанс ∠н=90 tga=ch/ah 3/4=ch/20 ch=3*20/4=15
tga=ctgB=3/4 ctgB=HB/CH 3/4=HB/15 HB=3*15/4=45/4=11.25
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tga=ctgB=3/4 ctgB=HB/CH 3/4=HB/15 HB=3*15/4=45/4=11.25