如图所示,在⊙O中,半径OD⊥弦AB于点C,连接AO并延长交⊙O于点E,连接EC,若AB=8,CD=2,则EC的长度为( ).
![](https://img.xkw.com/dksih/QBM/2020/12/17/2615892621844480/2617655392337920/STEM/bb88e055a2ed4259affd6d3a12483fcd.png?resizew=105)
![](https://img.xkw.com/dksih/QBM/2020/12/17/2615892621844480/2617655392337920/STEM/bb88e055a2ed4259affd6d3a12483fcd.png?resizew=105)
A.2![]() | B.8 | C.2![]() | D.2![]() |
更新时间:2020-12-30 00:56:27
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