如图4所示,圆O的直径AB=6,C为圆周上一点,BC=3过C作圆的切线l,过A作l的垂线AD,垂足为D,则∠DAC =
![](https://img.xkw.com/dksih/QBM/2011/5/13/1570196850991104/1570196856258560/STEM/eb8e0801d81048618f83ecf5b47b49e5.png)
![](https://img.xkw.com/dksih/QBM/2011/5/13/1570196850991104/1570196856258560/STEM/eb8e0801d81048618f83ecf5b47b49e5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
10-11高二下·陕西·期中 查看更多[2]
更新时间:2014-12-02 16:27:50
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【知识点】 高中数学综合库
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