如图,在Rt△ABC中,∠ACB=90°,点O在BC上,以OC为半径的
与AB相切,交OB于点D.若BD=2,tan∠AOC=2,则⊙O的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/af7288b0-65d0-4afb-9f5b-79e5ab14b505.png?resizew=149)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/14/af7288b0-65d0-4afb-9f5b-79e5ab14b505.png?resizew=149)
A.4![]() | B.6![]() | C.8![]() | D.9![]() |
更新时间:2022-04-25 19:58:29
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