Дан прямоугольный треугольник abc с прямым углом в. определите косинус и тангенс
угла а через отношения сторон.
and290620041
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12.12.2019 05:49
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Tg- отношение противолежащего катета к прилежащему
Сtg-отношение прилежащего катета к противолежащему.
Отношение--деление.
Значит
TgA= bc/ac
CtgA= ac/bc