∠BOA=180°
∠α=∠BOC=5/9*180=100°
∠β=∠СOA=(1-5/9)*180=4/9*180=80°
Ответ:∠α=100 ∠β=80
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∠BOA=180°
∠α=∠BOC=5/9*180=100°
∠β=∠СOA=(1-5/9)*180=4/9*180=80°
Ответ:∠α=100 ∠β=80