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Vita51lay
@Vita51lay
July 2022
1
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В треугольнике ABC угол С прямой , AC= 8. cos A= 0,4 Найдите AB
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polinakopyova
Cos a = 2/5 (т.е 0,4)
Cos a = ac/ab
2/5=8/ab
2ab=40
ab=20
1 votes
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Answers & Comments
Cos a = ac/ab
2/5=8/ab
2ab=40
ab=20