已知
,集合
,
,且
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052a2d819b3ded8da4420915a108faf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a570acd07719ab273a7172f971c2d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ad895aa13a5e87785524580a43f4cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f1ba0a1129741502600e47bf058c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b657cfa91b6394e4b00fa385a2c0149.png)
更新时间:2020-02-29 20:28:12
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【知识点】 由单位圆求三角函数值解读
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适中
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【推荐1】在平面直角坐标系
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是单位圆上一点,将点P沿单位圆按逆时针方向旋转
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,则ab的值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
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填空题-单空题
|
适中
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解题方法
【推荐2】点
是单位圆上的两点,
点分别在第一、二象限,点
是圆与
轴正半轴的交点,
是正三角形,若点
的坐标为
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_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
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