单选题 较易0.85 引用7 组卷267
如图,AB是⊙O直径,过⊙O上的点C作⊙O切线,交AB的延长线于点D,若∠D=40°,则∠A大小是( )
![](https://img.xkw.com/dksih/QBM/2021/8/11/2783624488722432/2785164017647616/STEM/935934c26a75485b949080cff774f5e7.png?resizew=153)
![](https://img.xkw.com/dksih/QBM/2021/8/11/2783624488722432/2785164017647616/STEM/935934c26a75485b949080cff774f5e7.png?resizew=153)
A.20° | B.25° | C.30° | D.35° |
19-20九年级上·湖北十堰·期末
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如图,在平面直角坐标系中,点A、B均在函数
(k>0,x>0)的图象上,⊙A与x轴相切,⊙B与y轴相切.若点B的坐标为(1,6),⊙A的半径是⊙B的半径的2倍,则点A的坐标为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/da7b1e1e-0f3c-4aee-b917-bf3f9084c340.png?resizew=163)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/da7b1e1e-0f3c-4aee-b917-bf3f9084c340.png?resizew=163)
A.(2,2) | B.(2,3) | C.(3, 2) | D.(4, |
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