过点
作圆
(
)的切线,切点分别为
、
,则
的最小值为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6e3ee582d8ff2a6db23780bc45e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87bddce083449dc295170601ff2b5443.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc86613c8ad7fb3c3984870bf33cfe43.png)
更新时间:2019-04-14 15:22:08
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