Ответ:
∠ВОС = ∠ВОС
∠ВОС = 180° - ∠DBC - ∠ACB = 180° - ∠ACB - ∠ACB = 180° - 2∠ACB
∠ВОС = 180° - 2 * 66° = 180° - 132° = 48°
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Ответ:
∠ВОС = ∠ВОС
∠ВОС = 180° - ∠DBC - ∠ACB = 180° - ∠ACB - ∠ACB = 180° - 2∠ACB
∠ВОС = 180° - 2 * 66° = 180° - 132° = 48°