如图,在
的正方形网格中,
的顶点都在小正方形的顶点上,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd4be97adde17423d59d86d18318c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd01722c6f4bf06ae7d753938e5b8bc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/6e40a65b-6144-4d16-b7b2-d8f402f8e7ee.png?resizew=113)
A.1 | B.![]() | C.![]() | D.![]() |
更新时间:2024-01-16 21:06:55
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【推荐1】如图,△ABC的顶点都是正方形网格中的格点,则sin∠BAC的值为( )
![](https://img.xkw.com/dksih/QBM/2021/11/12/2849448218836992/2851292691578880/STEM/36395c2b-9e27-4f15-abf8-8cccf53551a1.png?resizew=146)
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【推荐2】如图,已知由16个边长为1的小正方形拼成的图案中,有五条线段PA、PB、PC、PD、PE,其中长度是有理数的有 ( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/51f9aaee-5998-4533-9552-43a67ed94a8c.png?resizew=105)
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A.1条 | B.2条 | C.3条 | D.4条 |
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【推荐1】如图,由6个形状、大小完全相同的小矩形组成矩形网络,小矩形的顶点称为这个矩形网格的格点,已知小矩形较短边长为1,点
,
,
,
都在格点上,则
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/6403c03f-4d3c-4ec5-a03c-8b48058842e9.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/17/6403c03f-4d3c-4ec5-a03c-8b48058842e9.png?resizew=157)
A.![]() | B.![]() | C.![]() | D.2 |
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【推荐2】如图,已知⊙O的直径AB为10,弦CD=8,CD⊥AB于点E,则sin∠OCE的值为( )
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