olive1978
幼苗
共回答了18个问题采纳率:88.9% 举报
因为OC垂直于OB,垂足于O
所以角COB=90°
(1)若角AOC小于角COB,角COB与角AOC之差为60度,
则角AOB=角COB-角AOC=60°
(2)若角AOC大于角COB,角AOC在角COB外,
则角AOB=角AOC-角COB=60°
角AOC=90°+60°=130°
360°=角COB+角AOC+角AOB
角AOB=360°-角AOC-角COB
=360°-130°-90°
=140°
答:有两种情况,(1)当角AOC小于角COB时,角AOB为60°(2)当角AOC大于角COB时,角AOB为140°.
就这么简单……
1年前
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