如图,在平面直角坐标系中,三个向量
,
,
满足条件:
,
与
的夹角为
,且
,
与
的夹角为45°.
![](https://img.xkw.com/dksih/QBM/2021/11/19/2854609878581248/2858439994286080/STEM/c7ecc0b9af4f4afd852cd4b9641f70cb.png?resizew=251)
(1)求点A,B,C的坐标;
(2)若点P为线段OC上的动点,当
取得最小值时,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfde0038de382d2be9701cea23ef7eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329fdf7d989f77a32ca9e0361a9cc956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4407c0b2e5febf70f610bd00067f105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e41ad21ad36c7363c98564aee3e17e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfde0038de382d2be9701cea23ef7eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4407c0b2e5febf70f610bd00067f105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329fdf7d989f77a32ca9e0361a9cc956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4407c0b2e5febf70f610bd00067f105.png)
![](https://img.xkw.com/dksih/QBM/2021/11/19/2854609878581248/2858439994286080/STEM/c7ecc0b9af4f4afd852cd4b9641f70cb.png?resizew=251)
(1)求点A,B,C的坐标;
(2)若点P为线段OC上的动点,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37cdcf6b4854fdb881ce57ff36df67d4.png)
更新时间:2021-11-24 22:53:58
|
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】在平面直角坐标系
中,已知
是第二象限角,其终边上有一点
.
(1)若将角
绕原点逆时针转过
后,终边交单位圆于
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(2)若
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(3)在(2)的条件下,将OP绕坐标原点顺时针旋转
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,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22cea49ef50d603892feaf7c7eca4c60.png)
(1)若将角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3247125ea5fe96b378492fcd61d4ac95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25e9df8c8d1e4cf97a0f9cff00e9be77.png)
(3)在(2)的条件下,将OP绕坐标原点顺时针旋转
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe29caf61254f41c49125e31bf37614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知角
的终边经过
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(1)求
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e342c74e848a17a9f39458b4cfb94d6e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a6aad40c02d5217af4535853938065b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bae37e7df598efb7b59f726ce34e25c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52608996433509d17b43ab3d6360fdbb.png)
您最近一年使用:0次
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适中
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【推荐1】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07b9313239dc9faa5b820cdc20a0b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2462e44a7faee0800907b3f088e62392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24065d444e68ede7fe10b02e92b70d7d.png)
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【推荐2】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6b1670b2b446ace5bc12d7385b8e78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4143ebd4910aa059e700e186d26707.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258f7dd295360a0fa22a811dcffa3ac1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
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解答题-问答题
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适中
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【推荐1】已知向量
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf035ad678fcd88f9a4c268904a86eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c7662175bdd1adf8b1af9bee594727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7aa1233d7a93113281594c41f25c7db.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee4daf6e52cad1fc9fd81198503a712.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
【推荐2】已知向量
,
,函数
.
(1)求
的周期;
(2)设
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8008031f83b89b06565b27da2566f176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812fc9ccca7152ce30fe13b930946050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10cc7ab99edd4264861adcb92ed66a2b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b59d4aaaf7530f9bd32f8908ffe8fd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b24ee09bebcc79ad22fb000f482d02d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a080cab44a7d3605430d67b207f9be.png)
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