很简单
∵OE平分∠BOC ∴∠COE=∠BOE
∵OF平分∠AOC ∴∠AOF=∠COF
∴∠COF=∠EOF+∠BOE
∠EOF=(90°-∠AOF)+∠BOE
=(90°-∠COF)+∠BOE
=(90°-∠EOF-∠BOE)+∠BOE
=90°-∠EOF
∴2∠EOF=90°
∴∠EOF=45°
很简单
∵OE平分∠BOC ∴∠COE=∠BOE
∵OF平分∠AOC ∴∠AOF=∠COF
∴∠COF=∠EOF+∠BOE
∠EOF=(90°-∠AOF)+∠BOE
=(90°-∠COF)+∠BOE
=(90°-∠EOF-∠BOE)+∠BOE
=90°-∠EOF
∴2∠EOF=90°
∴∠EOF=45°