Please help ?
回答 (1)
2021-01-12 9:06 pm
✔ 最佳答案
In a circle, the angle at center is twice the angle at circumference.∠AOC = 2∠BOC
58°= 2∠BOC
∠BOC = 29°
收錄日期: 2021-04-23 23:06:54
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20210112121340AAek9jI