АС=5sina=24/25AB-?sina=BC/AC -> BC=sina*AC = 24/5AC^2=BC^2+AB^2AB^2=AC^2-BC^2AB^2=49/25AB=7/5ОТвет: 7/5
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АС=5
sina=24/25
AB-?
sina=BC/AC -> BC=sina*AC = 24/5
AC^2=BC^2+AB^2
AB^2=AC^2-BC^2
AB^2=49/25
AB=7/5
ОТвет: 7/5