已知
,角
的顶点为坐标原点,始边与
轴的非负半轴重合,终边经过点
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d6ab606fb600ac1ce35f38de14a1a6.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8466f89f849be1a5b7fd879f209dca5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f85c677b66de96c27ba3b4335f3def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e744af0f65e797a35d976c20f2dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d6ab606fb600ac1ce35f38de14a1a6.png)
更新时间:2023-09-04 11:07:05
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填空题-双空题
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适中
(0.65)
【推荐1】在平面直角坐标系中,已知角
的顶点与原点
重合,始边与
轴的非负半轴重合,它的终边逆时针旋转
后过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2903053dcfdf4142a46f37750be31fc1.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2903053dcfdf4142a46f37750be31fc1.png)
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填空题-单空题
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适中
(0.65)
解题方法
【推荐2】已知点
的坐标为
,将
绕坐标原点
逆时针旋转
至
,则点
的坐标为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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【推荐2】设
是方程5x2-3x-1=0的两根,则
的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd0e68971792ced283e6892b9cc56b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f96fa49a170809cf472b3ef0e86181f.png)
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填空题-单空题
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解题方法
【推荐1】在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6255cd977127dcc5992873195138ff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
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您最近一年使用:0次
填空题-双空题
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适中
(0.65)
名校
解题方法
【推荐2】在
中,角
的对边为
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88de527b00d11a61b70679595630975.png)
______ ,若
的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
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