如图,
中,
,
,
于点D,将
绕点B逆时针旋转,旋转角的大小与
相等,如果点C、D旋转后分别落在点E、F的位置,那么
的正切值是___________ .
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20-21九年级上·上海静安·期中 查看更多[3]
上海市静安区民办扬波中学2020-2021学年九年级上学期期中数学试题(已下线)专题24.2 解直角三角形【十大题型】-2023-2024学年九年级数学上册举一反三系列(华东师大版)(已下线)专题23.2 解直角三角形【十大题型】-2023-2024学年九年级数学上册举一反三系列(沪科版)
更新时间:2023-09-19 08:20:51
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