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olga156778

2) т к АВ диаметр, то треугольник АСВ прямоугольный, угол АСВ равен 90°.

угол В равен 90° - 64°= 26°

т к дуга АС равна 2* угол САВ , то дуга АС = 2*26°=52°

4). угол СКА равен дуге АС = 54°

угол АКВ равен 180° - угол СКА = 180 - 54° = 126°

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