∠COD=54°,OE为∠COD的平分线∴∠COE=∠DOE=54/2=27°∠BOE=24°OB可能在∠EOC内部,或者在EOD内部（一）OB在∠EOC内部时∠DOB=∠DOE+∠BOE=27+24=51°∵OD是∠BOA的平分线∴∠AOD=∠DOB=51°∴∠AOC=∠AOD+∠COD=51...