1 . 如图所示,在平面直角坐标系
中,角
和
的顶点与坐标原点重合,始边与
轴的非负半轴重合,终边分别与单位圆交于点
、
两点,点
的纵坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/22627086-8a72-4393-b352-e1af046cb318.png?resizew=180)
(Ⅰ)求
的值;
(Ⅱ)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9680cc783f95b0e31f871056ee860b37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/22627086-8a72-4393-b352-e1af046cb318.png?resizew=180)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac92da9a825c3f8a795d74cdad949b3.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa924d2cd35a5bcadd70bbcfc9ae925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
11-12高一下·湖南长沙·期中
2 . 已知向量
、
,
,
,
.
(1)求
的值;
(2)求
与
的夹角
;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696bf63a3a726968a19b8927be5a2112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0928087301c0628fba2a9cd3af14f34d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3da3515b6c312529712ea79d7574bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da6aef4a6d48f6c66780b6be96e42a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c773ac86e2f5f78d6f49987ef9067108.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701f7f518bc20f51da1a2756204d96e6.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696bf63a3a726968a19b8927be5a2112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0928087301c0628fba2a9cd3af14f34d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ab55147ca5c0f958af43b0637ee31b.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f56e34697278e79068337eca8fa32e00.png)
您最近一年使用:0次
2016-12-01更新
|
1048次组卷
|
7卷引用:2012-2013学年山东省微山县第一中学高一下学期期中考试数学试卷
(已下线)2012-2013学年山东省微山县第一中学高一下学期期中考试数学试卷(已下线)2011-2012学年湖南省浏阳一中高一下期中数学试卷(已下线)2012-2013年广东佛山佛山一中高一下第一次段考数学试卷(已下线)2012-2013学年河南省唐河县第一高级中学高一下第四次月考数学卷(已下线)2014届江西师大附中高三年级上学期期中考试理科数学试卷2017届山东临沭一中高三上学期10月月考数学(文)试卷(已下线)专题9.1 向量概念(重点练)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第二册)
11-12高二下·山东济宁·阶段练习
3 . 在
中,
分别是角
的对边,
且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3277aafd83f61b13785ac98abba3e530.png)
(1)求
的面积;(2)若
,求角
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/516983449108347c9bbf5dd2a72ab3dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55493e331f88d3d1c396e92b46c97ecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3277aafd83f61b13785ac98abba3e530.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f34365e5040ce6944115c8da61bf110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次