如图所示,已知角AOB=90°,角AOC是锐角,OD平分角BOC,OE...？

谭文清 2021-09-08 17:28

解：∠DOE = ∠DOC-∠EOC = 0.5∠BOC-0.5∠AOC = 0.5(∠BOC-∠AOC) =开发者_运维百科 0.5∠BOA = 0.5*90° = 45°

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