1 . 已知向量
,
,
.
(1)求
;
(2)若
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d888da739a15462867cfab588b259f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7fce57b53367920754873e300ba190a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae9f908aabcd9d9c46a0ecdfd1d6c12.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86f968d92b1fa12c2322e09f508957a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65b6c42393fae47c51101713167ff71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
您最近一年使用:0次
名校
2 . 设直线
的倾斜角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2b8dae45cd30a752aedb1ca66c30a.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2b8dae45cd30a752aedb1ca66c30a.png)
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解题方法
3 . 已知
中,
分别为角
的对边,
且
.
(1)求
;
(2)若
为
边的中点,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0ae8e92dd3119d41f2c830ea526516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0383eca00f71eed9dbe52b297a97408e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5afceed46ea4da44c94457d6c2bc0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
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2021-10-28更新
|
1755次组卷
|
9卷引用:湖南省常德市淮阳中学2021-2022学年高二上学期期中数学试题
4 . 已知向量
,
,函数
.
(1)当
时,求
的值;
(2)是否存在实数
,使函数
,
有四个不同的零点?若存在,求出
的取值范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473d980f09e1c797211a6b1f96654094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164b8d0d1f6a2229153ec5bbf3a89e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6298cccc4304b1988682c71f539f5c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc8bde4896ae4b9d3403b03f1bed9fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d272b6d77df37901cc53e1012df4eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ef1293170d5b185521684aff605aad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
5 . 已知三角形
的内角
所对边分别为
,面积
满足
.
(1)求
的值;
(2)若
,且
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44beeb245aa2925d9838cac0decc57d3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae7888d643678ea18f83f3237732052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f64ae34f023598b2e1f445587a837f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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6 . 已知向量
,
,
,设函数
.
(1)当
时,求函数
的值域;
(2)在
中,角
、
、
的对边分别是
、
、
,若
,
,求
的周长
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbdc897a5ef7ebb6474ea8055a0e4a61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2da2bd7a2dbf4f38a72b90447ff83b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64fe7817723237558c38fcff599b5d79.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在
![](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/2efdeeb6b84f83665c70b6a8069d703c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fa79a550591eb9e1bd07bced3a08fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2021-10-21更新
|
1110次组卷
|
5卷引用:安徽省亳州市涡阳第—中学2021-2022学年高二上学期第一次教学质量检测数学试题
7 . 十七世纪德国著名天文学家开普勒曾经说过:“几何学里有两件宝,一个是勾股定理,一个是黄金分割,如果把勾股定理比作黄金矿的话,黄金分割就可以比作钻石矿”.如果把顶角为36°的等腰三角形称为“黄金三角形”,那么我们常见的五角星则是由五个黄金三角形和一个正五边形组成,如图所示.在一个黄金三角形
中,
(黄金分割比),根据这些信息,可以得出
°=___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38abf0af6b05e7fd67b5c5de765675c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7783ad1a9e66752515dd2e9d8c8e49.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/07f38ca2-0422-456f-b83c-0ad23c6fdfbc.png?resizew=150)
您最近一年使用:0次
2021-10-21更新
|
285次组卷
|
4卷引用:湖南省常德市淮阳中学2021-2022学年高二上学期期中数学试题
湖南省常德市淮阳中学2021-2022学年高二上学期期中数学试题甘肃省嘉峪关市第一中学2020-2021学年高一下学期期末数学试题(已下线)专题5.6 两角和与差的正弦,余弦和正切公式-《聚能闯关》2021-2022学年高一数学提优闯关训练(人教A版2019必修第一册)(已下线)专题13 三角函数与三角恒等变换-2022年高考数学一轮复习小题多维练(新高考版)
名校
8 . 已知
,函数
.
(1)求
的最小正周期;
(2)求
的单调减区间;
(3)求
在区间
上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d010cd484670df750d17761d8755767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be2dd167392a87d125bfd91ab3cb396.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8af193f7277e447f45b19695940eba9.png)
您最近一年使用:0次
2021-10-19更新
|
538次组卷
|
4卷引用:广东省汕头市金山中学2021-2022学年高二上学期期中数学试题
广东省汕头市金山中学2021-2022学年高二上学期期中数学试题江苏省泰州中学2021-2022学年高三上学期第一次月度检测数学试题(已下线)考点17 三角函数的性质与应用-备战2022年高考数学典型试题解读与变式(已下线)第39讲 章末检测六
解题方法
9 . 已知
,且
是第三象限角,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fff368b9bd89fbd15c3490022e39d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f54d822f3e5e56c5221d1c474e70196.png)
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10 . 若
,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709d1fccf776d23fd5062db019fd272e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92bff061cb1ca10bf9c50037403ae532.png)
您最近一年使用:0次