50°, 20° ,110°
1/5A=1/2B
A-30=B.
1/5A=1/2(A-30)
0,2A=0,5A-15;
(0,5-0,2)A=15
0,3A=15, A=15/0,3=50°
B=A-30=20°
C=180-A-B=180-50-20=110°
Я не уверена
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Answers & Comments
50°, 20° ,110°
1/5A=1/2B
A-30=B.
1/5A=1/2(A-30)
0,2A=0,5A-15;
(0,5-0,2)A=15
0,3A=15, A=15/0,3=50°
B=A-30=20°
C=180-A-B=180-50-20=110°
Я не уверена