设∠COA=X则∠COB=∠AOB-∠COA=130-X,所以∠COE=∠毁芦肆COB/2=(130-X)/2所以哗握∠COD=∠COE-∠DOE=(130-X)/2-8而纤轿∠COD=∠COA=X=(130-X)/2-8得到x=38所以∠COE=∠COD+∠DOE=38+8=46
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