名校
解题方法
1 . 已知角
,
的顶点都在原点O,始边都与x轴非负半轴重合,点
在
的终边上,点
在
终边上.
(1)求
的值;
(2)若
,
,
,求
的值.
![](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/d6c09b41032e4722c412c2e2427500a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/009a88dbbe4bbb89046c1055538ed447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3884b343d76a26b4b85b48987d7064.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9780356cae6b2431c3b1e4d347201801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029ec4dedb08d20b1756d89e7da94c24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa9731bbc08b62450d4c3a004c741ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c4d975ad05fc4f258046a006c850a2.png)
您最近一年使用:0次
名校
解题方法
2 . 在①
,②
,③
这三个条件中任选一个,补充在下面的横线上,并加以解答.
在
中,角
,
,
所对的边分别为
,
,
,且满足___________.
(1)求
的值;
(2)若
为边
上一点,且
,
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a909bc3d298d36d21b18644fdff89a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ff50d0c1191ea625e0a10531ab4fa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363ae962bca4d90fa8d3b1de64c900ea.png)
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)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721e29b775e696045f44a4b1e7f74ef2.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/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
2022-05-02更新
|
950次组卷
|
6卷引用:四川省广元市苍溪县苍溪中学校2022-2023学年高一下学期期中数学试题
四川省广元市苍溪县苍溪中学校2022-2023学年高一下学期期中数学试题浙江省北斗联盟2021-2022学年高一下学期期中联考数学试题江苏省扬州中学2021-2022学年高一下学期5月月考数学试题(已下线)专题03 玩转正余弦定理-2021-2022学年高一数学下学期期末必考题型归纳及过关测试(人教A版2019)福建省福州第八中学2022-2023学年高一下学期期中考试数学试题江西省新余市2022-2023学年高一下学期期末质量检测数学试题
名校
3 . 设向量
,向量
,且
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a000579f3ff33cd8ddee5585805fd1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/378ba52bbe9f04409f4c949ac900525a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a313d13ed43320fc084117c59bf596fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c1f914da4657eca7865982b130b299.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-11-07更新
|
498次组卷
|
3卷引用:四川省广元市苍溪县实验中学校2019-2020学年高一下学期期中考试数学试卷