z_xiaong
幼苗
共回答了12个问题采纳率:100% 举报
第一种情况
∵∠AOB=130°,OC平分∠AOB
∴∠AOC = ∠COB = 130° / 2 = 65°
∵∠BOD是直角
∴∠BOD = 90°
∴∠COD = ∠BOD - ∠COB = 90° - 65° = 25
第二种情况∵∠AOB=130°,OC平分∠AOB
∴∠AOC = ∠COB = 130° / 2 = 65°
∵∠BOD是直角
∴∠BOD = 90°
∴∠COD = ∠BOD +∠COB = 90°+65° = 155
1年前
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