已知
外接圆的圆心为
是
边上一动点,若
,则
的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db36b4497b911bc047253b832ae01c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05507e8096655ca0d0b5cc02ae592b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efcc7c774f084c2848e9734a00e4dd96.png)
22-23高一下·云南楚雄·期末 查看更多[2]
更新时间:2023-07-16 11:56:18
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【推荐1】圆是中华民族传统文化的形态象征,象征着“圆满”和“饱满”,是自古以和为贵的中国人所崇尚的图腾.如图所示的是一个圆形,圆心为O,A,B是圆O上的两点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db627ff11cd5112ead94e6dff223b67f.png)
________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56387ff53874620addcb0b91a605a309.png)
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【推荐2】已知向量
、
满足
,
,则
在
上的投影为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3448cf3ddbff1bb0d07730a63ef0348.png)
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【推荐1】若向量
的夹角
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc781bfb930aa545ccdc67ca8ec4098.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8f3a8b0608ec011ad95c522fd2ea4d.png)
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【推荐2】在
中,
,
为
的中点,且
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐3】已知O为
角平分线AM上一点,
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0976b61141fb7c70efeea95c19ea35b.png)
___________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/708dca69fe58a9c3a535401181257b0b.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
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