如图,在平面直角坐标系中,菱形
的顶点
的坐标是
,则顶点
的坐标是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aedad6bb70631b944c69f8f0b02b35d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/25/7be68524-e1e1-499e-b9b6-ff544b94bc86.png?resizew=200)
更新时间:2023-07-21 16:09:00
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【推荐2】如图,在△ABC中,∠ACB=∠ADC=90°,若sinA=
,则cos∠BCD的值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://img.xkw.com/dksih/QBM/2013/3/7/1573608689197056/1573608772583424/STEM/b342a79f-3cad-49ad-8dd8-10d08966def2.png?resizew=141)
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【推荐1】如图,在菱形ABCD中,
,
,以
为圆心AD为半径画弧,过点
作
于点
,则图中阴影部分的面积为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83cb6327dcbc8a998e6586bcfa7a3b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dbf31dfd36aa456a63bafea8bc1985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/7102b1e9-f593-4a63-8391-cd95a2b6472c.png?resizew=157)
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解题方法
【推荐2】如图①,在菱形ABCD中,∠B=60°,M为AB的中点,动点P从点B出发,沿B→C→D的路径运动,到达点D时停止.连接MP,设点P运动的路程为x,MP2=y,若y与x的函数图象大致如图②所示,则菱形ABCD的周长为____________ .
![](https://img.xkw.com/dksih/QBM/2020/6/4/2477476187193344/2477871436480512/STEM/731cd7af339147c4bb84f99f32353cf1.png?resizew=210)
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