如图所示,已知点
,单位圆上半部分上的点
满足
,则向量
的坐标为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59f0e35b7ae5206e45878934482b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344317ca983b9ad47b41a5f95815ce20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794efd8cf0cc386faa170d01f357b1c5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/9ee8ab39-104a-4ef9-bd62-da6a97c68f1c.png?resizew=134)
更新时间:2019-09-13 00:09:14
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解题方法
【推荐1】已知平面向量
,满足:
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fc6092100600070328042adaf76aad3.png)
________ ,
的取值范围是_____________ .
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【推荐2】如图直角梯形
中,
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,
,在等腰直角三角形
中,
,则向量
在向量
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,
分别为线段
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上的动点,且
,则
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【推荐1】已知平面向量
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【推荐2】已知
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与
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名校
【推荐3】已知向量
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,若
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在
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