已知同一平面上的
和
分别是边长为2和4的正三角形(其中A,B,O和C,D,O均按逆时针排列),则
的取值范围是______ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/24/f55af541-0574-4d52-a320-689bc6d49309.png?resizew=143)
21-22高一下·辽宁葫芦岛·期末 查看更多[2]
辽宁省葫芦岛市2021-2022学年高一下学期期末数学试题(已下线)微专题01 共线问题与数量积求解策略(2)-【微专题】2022-2023学年高一数学常考点微专题提分精练(人教A版2019必修第二册)
更新时间:2022-07-21 13:54:15
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