如图,O为坐标原点,四边形OACB是菱形,OB在x轴的正半轴上,sin∠AOB
,反比例函数y
在第一象限内的图象经过点A,与BC交于点F,则△AOF的面积等于( )
![](https://img.xkw.com/dksih/QBM/2022/3/28/2946002789236736/2964227593314304/STEM/260abc3c-bda5-4ecf-b34f-8e1d5cf76851.png?resizew=191)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5bdc7032d7d88778cf61028a6b4ba67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/726fb0819484307c801c529cd7abdc56.png)
![](https://img.xkw.com/dksih/QBM/2022/3/28/2946002789236736/2964227593314304/STEM/260abc3c-bda5-4ecf-b34f-8e1d5cf76851.png?resizew=191)
A.20 | B.40 | C.60 | D.80 |
2022·湖北十堰·一模 查看更多[2]
更新时间:2022-04-23 09:59:23
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【推荐1】如图,以矩形
的顶点O为坐标原点建立平面直角坐标系,使点A、C分别在x轴、y轴的正半轴上,双曲线
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【推荐2】如图,在平面直角坐标系中,正方形ABCD的顶点A的坐标为
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【推荐2】如图,在
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【推荐1】如图,菱形
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交于点
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【推荐2】已知菱形ABCD的面积为96
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【推荐1】将函数y=-2x+4的图像绕图像上一点P旋转n°(45<n<90),若旋转后的图像经过点(3,5),则点P的横坐标不可能是( )
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