Help!Am nevoie de acest ex!Vreau rezolvare!Dau 55 de puncte +coroana

∡AOC=∡AOB+∡BOC
a) ∡AOC = 52°+73°=125°
b) ∡AOC = 63°18'+116°42'=179°60'=180°
c) ∡AOC = 45°+116°=161°