∠AOB=∠BOC+∠AOC=2∠AOC+∠AOC=3∠AOC=114°
所以∠AOC=38°
∠BOC=2∠AOC=76°
∠AOE=∠BOE=57°
∠EOC=∠AOE-∠AOC=57°-38°=19°
答:∠EOC=19°