Ответ:
∠А=3*∠В
∠С=∠В+20°
Т. к. ∠А+∠В+∠С=180°
3*∠В+∠В+∠В+20°=180°
5*∠В=160°
∠В=32°
∠А=3*32°=96°
∠С=32°+20°=52°
Ответ: ∠А=96°; ∠В=32°; ∠С=52°
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Ответ:
∠А=3*∠В
∠С=∠В+20°
Т. к. ∠А+∠В+∠С=180°
3*∠В+∠В+∠В+20°=180°
5*∠В=160°
∠В=32°
∠А=3*32°=96°
∠С=32°+20°=52°
Ответ: ∠А=96°; ∠В=32°; ∠С=52°