1 . 已知点
,
的坐标为
,则点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c9ece4ff94b2b1c4cc7ee25000f996f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e47d84d388dc1edd967cdc439b2a6c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceff0e7d103475c3ba9a2712f373185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 下列结论正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
3 . 若角
的终边经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d884fb14030b8961927fe6c9c3778ed9.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21b59d92c33a3b451d6cc13878c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d884fb14030b8961927fe6c9c3778ed9.png)
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4 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2635d553e47a8500175c5a8169fe6672.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 已知
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fefba395767c9d932837df1585395fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1cc0882bf6d1ae06bf316f9474e66b8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知平行四边形
的三个顶点
,
,
的坐标分别为
,
,
,则顶点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c7b74fd862d7e3f35e40ae1f626c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beb189381103ad1e758fd8cfedb6355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a3619ccbcf65312754a970647014e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 正方形
的边长为6,
,
分别为线段
,
上的动点.
(1)若
是
的三等分点
,求
的值;
(2)当点
在
边上运动时,始终保持
,当点
运动到什么位置时,线段
最短.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c330983114d20b630093055ac267db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/146c183051f41ac154a9ff4d74d3d5cc.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce726bceb02452bb4e5ed6b00fa94e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
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解题方法
8 . 已知
,
,
和
的夹角是60°,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cd160e94583cfa2ea76af680966f75.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee2c2c4b37645e9456eb6f8e45dc868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd09c939bec644680e8587e8accfd905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d806f27eecf5aee1e75bf35acbcd4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/964c64c610af9274ab57b28edc2f3c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cd160e94583cfa2ea76af680966f75.png)
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9 . 下列说法错误的是( )
A.若![]() ![]() ![]() |
B.方向为南偏西60°的向量与北偏东60°的向量是共线向量 |
C.直角坐标平面上的x轴、y轴都是向量 |
D.若用有向线段表示的向量![]() ![]() |
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10 . 若过点
,
的直线的斜率等于1,则m的值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc0b206d8a22658405995795b4f5d8ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3043fea80050b76e52852abbd9ef6cf.png)
您最近一年使用:0次