L(угол) L AOB=180’ L AOC=?,x’-20 L BOC=?,х’-20

Question

L(угол)
L AOB=180’
L AOC=?,x’-20
L BOC=?,х’-20

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Answer 1

X+60°+x-20°=180°
2x=140°
x=70°
∠AOC=70°+60°=130°  ∠BOC=70°-20°=50°