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Окружности А радиуса а и окружность в радиуса ь пересекаются в точках С и D. Ha
окружности А даны точки А1 и А2, а на окружности В даны точки В1 и В2 так, что отрезки
A1B1 и A2B2 пересекаются в точке D.
Известно, что CA1 = 15, CA2 = 12, CB1 = 10.
Найти:CB2
a/b
Sagot :
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