名校
1 . 方程
在区间
上的所有根之和为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e38b2980bf6158db05fa2f7a56e3d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebb9595cfebe608e2b3ec06c10421dd.png)
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2021-04-18更新
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380次组卷
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3卷引用:江西省景德镇市浮梁县第一中学2020-2021学年高一(3、4)班下学期期中考试数学试题
江西省景德镇市浮梁县第一中学2020-2021学年高一(3、4)班下学期期中考试数学试题湖南省长沙市雅礼中学2019-2020学年高二上学期第一次月考数学试题(已下线)专题20 解三角方程(一题多解)
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解题方法
2 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f683c5a21a049cacecbc9b90f48869.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321082c272eed46857b2a75aba2871e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f683c5a21a049cacecbc9b90f48869.png)
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2021-04-12更新
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1077次组卷
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4卷引用:【市级联考】江西省新余市2019届高三上学期期末考试数学(理)试题
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3 . 求值:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35fa40f7a397ae08669bfcdbbb1c5fca.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35fa40f7a397ae08669bfcdbbb1c5fca.png)
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2021-03-24更新
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611次组卷
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6卷引用: 江西省南昌市新建区第二中学2022-2023学年高一下学期4月份学业水平考核数学试题
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4 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90cb28ea2a1cdaf7b433785d7e9033c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-10-01更新
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609次组卷
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2卷引用:江西省南城一中2020-2021学年高一4月月考数学(理)试题
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5 . 已知
,
为锐角,
,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bc052a11cf1a01445992672dde2836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad46fb80dccfc8e7f36830859ed52ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673f7e66c2a252da4c77c70d90c8cec.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-06-18更新
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598次组卷
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3卷引用:江西省萍乡市芦溪中学2022届高三上学期第一次段考数学(理)试题
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6 . 在平面直角坐标系中,角
的顶点在原点,始边与
轴非负半轴重合,角
终边上有一点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059c741f6790993b5fc18a77ae70fb14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae794a72ce600ce708c8a159da96eb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059c741f6790993b5fc18a77ae70fb14.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 设
的内角A,B,C的对边长a,b,c成等比数列,
,延长
至D使
.
(1)求
的大小;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eaa26f34eb2ec5488cef6bd5263d9df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f685431e82a93da29b46e72dedbf2eeb.png)
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解题方法
8 . 若
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dfdecc138656168891a7c84a11e5d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d10079d449b0b4802adfa3b1b2e543c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397cc0312d9ac2168864e3441b0d2d5b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
9 . 已知
,则
的值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254919b65ef52d53e0db86c205e586a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25f61e144c8b84e8d1969a66ee19803.png)
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2020-05-14更新
|
482次组卷
|
5卷引用:江西省安福中学2022-2023学年高一下学期5月期中考试数学试题
江西省安福中学2022-2023学年高一下学期5月期中考试数学试题2020届江苏省高三高考全真模拟(八)数学试题(已下线)第13练 三角恒等变换-2021年高考数学(文)一轮复习小题必刷(已下线)第14练 三角恒等变换-2021年高考数学(理)一轮复习小题必刷(已下线)7.4 三角函数应用-2020-2021学年高一数学课时同步练(苏教版2019必修第一册)
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解题方法
10 . 在
中,角
,
,
所对的边分别为
,
,
,且
.已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1073b32a86093f661316f5c24ce9ff7b.png)
.
(Ⅰ)求证:
,
,
成等差数列;
(Ⅱ)若
,
,求
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce613eaa5df46a50174085ef5d1087fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1073b32a86093f661316f5c24ce9ff7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700c31d790f2d96830ae602a978e89eb.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23725094c363fd158166a8698971694c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ef10e175dc99ca0dc9e99a0be00cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2a39beea5adf5d07aea0424ca7a64f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaab0619213938b7f55769c7540abdf8.png)
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2020-05-13更新
|
620次组卷
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2卷引用:2020届江西省九江市高三二模理科数学试题