计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba2d2a9b7b38aecace8e73f1c24125f.png)
2023·江苏苏州·一模 查看更多[3]
更新时间:2023-04-13 14:33:39
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解答题-计算题
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【推荐2】计算题
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f306380d7e04c365ae1f9885350514ff.png)
(2)先化简,再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f29a29104079660a6b398ab79901ff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
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解答题-问答题
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【推荐1】先阅读下列一段文字,再回答后面的问题:己知在平面直角坐标系内两点
,其两点间的距离
,同时,当两点所在的直线在坐标轴上或平行于坐标轴或垂直于坐标轴时,两点间距离公式可简化为
或
.
(1)已知
两点间的距离为__________;
(2)已知线段
轴,
,若点M的坐标为
,则点N的坐标为_____________________;
(3)已知一个三角形各顶点坐标为
,此三角形的形状是__________三角形.
(4)在平面直角坐标系中的两点
为x轴上任一点,则
的最小值为__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/645acc33d0a66d56ca44440d557afe07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9587e744697d2bc4dd574439632a25e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c38f3a03c039cfcb8c10d02044a79c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a864b9de1c6cbf4c4b1e64ae3a82b31.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9c4aa5d38c21c27800c3a70bc5d1d8.png)
(2)已知线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf20f734ac54ab0eec2e1c170a3a24f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ee7af832af9460f4775fa5c8c3620f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a20a61d384b658080b92d8c1a9e7c0.png)
(3)已知一个三角形各顶点坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d92f1402073a88b380096cf9b7be55.png)
(4)在平面直角坐标系中的两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7654776722859092e84ecb460e73250d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ec9a812274ad0839f20ba17348687.png)
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解答题-问答题
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【推荐1】如图,在□ABCD中,AD=
,□ABCD的面积是
,⊙O与□ABCD的三条边分别相切于点D、E、F,交AD于点G,DG=3AG.
(1) 求⊙O的半径的长;
(2) 求阴影部分的面积(保留π).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6093eebca8f3ff82ce9298feb197e955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ae0805eb3b4eb214553a13d1978534.png)
(1) 求⊙O的半径的长;
(2) 求阴影部分的面积(保留π).
![](https://img.xkw.com/dksih/QBM/2021/4/2/2691065734815744/2697654946340864/STEM/41b35169-0f90-45b9-b923-3f8b7104c9b4.png?resizew=189)
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