/_CAB=180°-(90°+39°)=180°-129°=51°
/_АСВ=180°-(90°+33°)=180°-123°=57°
/_АВС=180°-(51°+57°)=180°-109°=71°
Ответ:/_АВС=71°
Вроде правильно
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/_CAB=180°-(90°+39°)=180°-129°=51°
/_АСВ=180°-(90°+33°)=180°-123°=57°
/_АВС=180°-(51°+57°)=180°-109°=71°
Ответ:/_АВС=71°
Вроде правильно