如图,
是
的直径,
是
上的两点,
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317d7ac04c9cf58ee1503f1a1bf9e3d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13470e70e57c5fa935fac9e5204b3afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d16fab0f52c8af5abba0bf19a06ea0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-05-09 22:59:31
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【推荐1】图,
中,点C在
上,
,
分别为
、
所对的圆周角.若
,
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7720f6aae17221189c19ba2d9e1568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37cd347f9c855e66e5bdb940164422d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59e3f2bc7c00eacfe20a2ea80aefd1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c15ae641fabe9ad8e1063020c7ce9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37cd347f9c855e66e5bdb940164422d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐2】如图,已知⊙O上三点A、B、C,连接AB、AC、OC,切线BD交OC的延长线于点D,若OC=2,∠A=30°,则DB的长为( )
![](https://img.xkw.com/dksih/QBM/2021/4/22/2705045126275072/2705760519618560/STEM/6ef6d96693484ebb9763e2c9231a0342.png?resizew=146)
![](https://img.xkw.com/dksih/QBM/2021/4/22/2705045126275072/2705760519618560/STEM/6ef6d96693484ebb9763e2c9231a0342.png?resizew=146)
A.4 | B.![]() | C.![]() | D.1 |
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