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Vulthuryol
@Vulthuryol
July 2022
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В треугольнике abc угол c равен 90°, ab=8, ac=4. Найдите cosa.
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Nazar228425
Косинус - отношение прилежащего катета к гипотенузе, т. е. AC/AB = 5/7
15/AB = 5/7
AB = 15*7/5 = 21.
Ответ: 21.
2 votes
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Answers & Comments
15/AB = 5/7
AB = 15*7/5 = 21.
Ответ: 21.