1 . 已知
,且
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0955a9768dd7a11a9f1202eba814a6a7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e92852189b59df2d81484fa33ff0f9cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d394016b9fecac73f38cbc4ff18dee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0955a9768dd7a11a9f1202eba814a6a7.png)
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2 . 已知
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69804de4a5c14675e2e4dfb5927d2165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ba1a1dedf513f3d19fd8f0cc4bc8d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca9dccd9647e598ea4e182a8a2be81b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知向量
,
,若
,则锐角
的值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac90aed4e57f0c8d6ee1c02696bcc7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd439dba62f2bacdee64ebf2b3e51aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03481e6a73207be03fdbc1f8e9965b37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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4 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce27e0542ff38c83cd5569c04de80cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1def352bfa19c05488fa6e8ef3d2e97.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 若
为锐角,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9da049c686ff81df5d6645ef51e993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08548dac66ba40225d4b92fb4792320.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 设
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc709bc1e22d2da5a08ba9b1fe0fb87.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e05d9cbb025df697084092c7ddcf72c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5dc1aed2654280716fcb49d350afc6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 若锐角
满足
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a296b5c5fd1b87fb1c5dac76fd0566be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fee7e2969987222954a10a03d200c03.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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湖南师范大学附属中学2024届高三下学期模拟(二)数学试卷(已下线)专题03 恒等变形拆角归类(1) -期末考点大串讲(苏教版(2019))江苏省南京市中华中学2023-2024学年高一下学期5月月考数学试卷
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9 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46902ee9fbd30111d7831f1fc7b79641.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff633155f38c60f3c4ab99feef7ff34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46902ee9fbd30111d7831f1fc7b79641.png)
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10 . 数列
满足
,
,
,
.
(1)证明:数列
为等差数列,并求数列
的通项公式;
(2)求正整数
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d667a1cbc19a151a5223ebd69d021d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd533a2645dbbdc0e52086ddcdc65da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545027eac895de229678d6644f5ee25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecfd552f63963ad88d97d335131e436.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92894107bb3dab385c5cbb2cfb27a710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff9dc01774072a70b084c35b01eb0c.png)
(2)求正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde46d2775e3ca1610036a71b30d3b85.png)
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江西省八所重点中学2024届高三下学期4月联考数学试卷江西省八所重点中学2024届高三下学期4月联考数学试卷重庆市第一中学校2023-2024学年高二下学期期中考试数学试题(已下线)第一章数列章末综合检测卷(新题型)-【帮课堂】2023-2024学年高二数学同步学与练(北师大版2019选择性必修第二册)