B= 180°-120°= 60°
C= 180°-110°= 70°
A= 180°-(B+C)= 180°- (60°+70°)= 50°
Ответ: А=50°, В=60°, С=70°
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B= 180°-120°= 60°
C= 180°-110°= 70°
A= 180°-(B+C)= 180°- (60°+70°)= 50°
Ответ: А=50°, В=60°, С=70°