1 . 在平面直角坐标系中,O为坐标原点,已知
为两个夹角成
的单位向量,
,
.
(1)求
;
(2)求
,
的夹角;
(3)设
,若
是以
为斜边的直角三角形,求实数t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ca3f027939b4c8b6b3c3e1851dc1df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60988619cf3edac935b6d32e55f95d44.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d401876b078e318413b8ad876c54b7be.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d2aeffe5a627cc9c3f9eb1d5464652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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2 . 如图,在
中,
,
,D,E分别是直线AB,AC上的点,
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4397f6e86c69e6b597e7e8635afbfb8.png)
______ .若P是线段DE上的一个动点,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f13ed38754929014a20dde676150f9ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b20b98c5ea2825b0dc56818aed9364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4574204d3d9f2d5629af943b73c26a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4397f6e86c69e6b597e7e8635afbfb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a09c2b91e41d1be14e7eb1b56800081.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/561294cd-a9b0-4daa-a087-7de6501fc32a.png?resizew=174)
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3 . 已知平面内的三个向量
,
,
.
(1)若
,求实数
的值;
(2)若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b6e99d71eaa7784dab1e3808a2ad4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b7256baf96702bc084c3447a52315ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc97cec4dce7da46e5f3f7ce1550812.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7cbabe87402b89623f8c75af8f7185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d1643b1a0be544a027852f33ac703c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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4 . 下列命题中,正确的是( )
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
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5 . 已知平面向量
,
,函数
.
(1)求
的最小正周期和最大值;
(2)求不等式
的解集;
(3)求函数
在
上的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a14787e7232b91a7e903a9b70f163b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e664676a0c621dee32284824813358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a029d3e7df3aebee0479179982f555c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
(3)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113cc2eb1633f22868d0f178b7dbdd74.png)
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解题方法
6 . 已知:
,且
,
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda318adf65c6b6fd45f651365f52346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b291445e61f53061200d5d0d31f678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307676491a1db0befa2881a34dc93eb0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ac5ed81371243d3b7b69b21c6f0611.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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7 . 如图所示,在
中,
,AD与BC交于点M.过M点的直线
与两边OA、OB分别交于点E,F,设
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab90128f56aeb2d2c84b348ffa8d22c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07503227ec732954dc608f62a56b5ae8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/d622314d-16ef-418e-a216-15633e8edf04.png?resizew=158)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
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解题方法
8 . 已知
,
,
.
(1)求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7f2404d7e48599d7188bd2ea27ad62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e761714f6940c2c06c5750e2ed80cc4e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db796b223b35e52aa7b4114da8072f5.png)
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2024-04-08更新
|
394次组卷
|
3卷引用:江苏省南通市区+通州区2023-2024学年高一下学期3月质量监测数学试卷
江苏省南通市区+通州区2023-2024学年高一下学期3月质量监测数学试卷天津市第一中学2023-2024学年高一下学期期中数学试题(已下线)第四章三角恒等变换章末八种常考题型归类-【帮课堂】(北师大版2019必修第二册)
9 . 已知
,
,
.
(1)求
;
(2)求向量
与
的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fc7a342293983cc4865498c121493d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0030e7be6d3f4ff2a7982d507e859b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf26dc4c8ad920dd1f067f174c63e992.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7efc342fe2e7c9e0ce7a836e512ef389.png)
(2)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed492f7b29166ba5c1f0023b05a439c5.png)
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解题方法
10 . 下列等式中,成立的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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