名校
解题方法
1 . 关于任意平面向量可实施以下6种变换,包括2种v变换和4种w变换
:模变为原来的
倍,同时逆时针旋转90°;
:模变为原来的
倍,同时顺时针旋转90°;
:模变为原来的
倍,同时逆时针旋转45°;
:模变为原来的
倍,同时顺时针旋转45°;
:模变为原来的
倍,同时逆时针旋转135°;
:模变为原来的
倍,同时顺时针旋转135°.
记集合
,若每次从集合S中随机抽取一种变换.经过n次抽取,依次将第i次抽取的变换记为
,即可得到一个n维有序变换序列,记为
,则以下判断中正确的序号是______ .
①单位向量
经过2022次v变换后所得向量一定与向量
垂直;
②单位向量
经过2022次w变换后所得向量一定与向量
平行;
③单位向量
经过
变换后得到向量
,则
中有且只有2个v变换;
④单位向量
经过
变换后不可能得到向量
;
⑤存在n,使得单位向量
经过
次变换后,得到
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f44c235d8b49207ad3f2d77dc5d6cf20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/814f55724f7ee57bd395eb3b95393c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3871a062c5e0a4e009b01aa47afb48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a14b56f7f7bb23cd4bf9041e440a46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43801f9d9826f8e3646803c915f70e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd028b19c0cbdb7f6f8a6390f7b7fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
记集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ef6e24288a68823a7d3143eb547a72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ebdb675dac2dc1d7cfeb8e6882b288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e45ec2967e63500678755d5d5dbfb1f.png)
①单位向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deab0dd26dbb0badb5f6006722f8514a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1a0171524ed73b7a52a9f96ecde272.png)
②单位向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deab0dd26dbb0badb5f6006722f8514a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1a0171524ed73b7a52a9f96ecde272.png)
③单位向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deab0dd26dbb0badb5f6006722f8514a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cb1319a55351f60be7045aa860eb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137e0222430eda79fff5ff9fae699581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cb1319a55351f60be7045aa860eb38.png)
④单位向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deab0dd26dbb0badb5f6006722f8514a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca1f45a8716bdab6cad8261af16aa10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b06ffa0ec8b3f73dab0eee6e3f89a3.png)
⑤存在n,使得单位向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deab0dd26dbb0badb5f6006722f8514a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9445875e1d2f78a79c38a04897435418.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbdd31e5732b68aca509f55e69578fb9.png)
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名校
2 . 已知函数
的图象关于直线
对称,则
可以为__________ .
(写出一个符合条件的
即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55a5ba86972c5371fa3ca058dcd0262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(写出一个符合条件的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
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2024-04-13更新
|
343次组卷
|
2卷引用:湖南省娄底市2024届高考仿真模拟考试一模数学试题
3 . 已知函数
的一个零点为
,那么
的一个值可以是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e0aed69afe0d68662b02cebe49e8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
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2023-08-05更新
|
400次组卷
|
3卷引用:北京市平谷区2022-2023学年高一下学期期末数学试题
北京市平谷区2022-2023学年高一下学期期末数学试题(已下线)模块四 专题1 题型突破篇 小题入门夯实练(2)高一人教A期末终极研习室【北京专用】专题02三角函数(第二部分)-高一下学期名校期末好题汇编
名校
4 . 已知
,
,
是同一平面内自上而下的三条不重合的平行直线.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/c183fc07-bedd-4f67-8fd0-4ca3f168df19.png?resizew=332)
(1)如图1,如果
与
间的距离是1,
与
间的距离也是1,可以把一个正三角形ABC的三顶点分别放在
,
,
上,求这个正三角形ABC的边长.
(2)如图2,如果
与
间的距离是1,
与
间的距离是2,能否把一个正三角形ABC的三顶点分别放在
,
,
上,如果能放,求BC和
夹角
的正切值并求该正三角形边长;如果不能,试说明理由.
(3)如果边长为2的正三角形ABC的三顶点分别在
,
,
上,设
与
间的距离为
,
与
间的距离为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/c183fc07-bedd-4f67-8fd0-4ca3f168df19.png?resizew=332)
(1)如图1,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
(2)如图2,如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(3)如果边长为2的正三角形ABC的三顶点分别在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a1f2f816a51069ca88b1665053c53e.png)
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