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lizok789
@lizok789
August 2022
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В треугольнике ABC угол С прямой, BC=21, sin угла BAC=7\8. Найдите АВ.
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bgr753
Решение:
1.sin BAC = 7/8
sin BAC = BC/AB => 21/АВ = 7/8
2.Значит, АВ = 21*8/7 = 24
Ответ: АВ = 24
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lizok789
Спасибо) я так и думала!
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Answers & Comments
1.sin BAC = 7/8
sin BAC = BC/AB => 21/АВ = 7/8
2.Значит, АВ = 21*8/7 = 24
Ответ: АВ = 24