∵oc平分∠AOD
∴∠COD=½∠AOD
∵OE平分∠BOD
∴∠DOE=½∠BOD
∵∠COE=∠COD+∠DOE
∴∠COE=½∠AOD+½∠BOD
即 =½∠AOB
∵∠AOB=110°
∴∠COE=½×110°
=55°