квадрат синуса Вравен 1-25/49=24/49
sin C/AB=sinB/AC
sinC=5*2*sqrt(6)/(7*4)
sin C=5sqrt(6)/14
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квадрат синуса Вравен 1-25/49=24/49
sin C/AB=sinB/AC
sinC=5*2*sqrt(6)/(7*4)
sin C=5sqrt(6)/14