∠AOB=90°我要过程啊
不过我已经会啦
已知圆o的半径为5cm弦ab=5根号2求弦所对圆心角角aob的度数
已知圆o的半径为5cm弦ab=5根号2求弦所对圆心角角aob的度数
数学人气:777 ℃时间:2019-08-24 06:51:24
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