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У треугольнику MNK MN=r, MK=n, NK=m. пользуясь теоремой косинусов, найдите cos M
Ответы 1
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cos M= числитель (r2+m2-n2) / знаменатель (2*r*m)
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Автор:
dilly dally4ppv - 6 лет назад
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