解题方法
1 . 在直角三角形
中,
,点
在边
上,且
,设
.
(1)若
,求
的值;
(2)若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8652515789d01ab3af8c9986cf94274a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/379556ae8865fdf6430f71be2a99f71e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf718980f931b3f21a332916404fef2f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759b29a7b2b3735306f1a650355a7858.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ee25a78681febe00db64902902420ea.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da336bc7d2112ecff7d1e632ea2df748.png)
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名校
解题方法
2 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e141ecbdfcfb851f76af6c34faa2d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ec7c99202b44d5d65239f65f155b6f.png)
A.-3 | B.2 | C.3 | D.不存在 |
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3 . 在平面直角坐标系中,锐角
,
均以
为始边,终边分别与单位圆交于点
,
,已知点
的纵坐标为
,点
的横坐标为
.
(1)直接写出
和
的值,并求
的值;
(2)求
的值;
(3)将点
绕点
逆时针旋转
得到点
,求点
的坐标.
![](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/c3e5af20b2f8c1fba4470f9650989e51.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954795d1842974a705f9468f3b952ab1.png)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fe57d4fbae536de2e641d9d349fcf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d75442a901f013aeb5c52a7113ae9b9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dff93568aeebd3ebf5c46d75f9d2f8a.png)
(3)将点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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4 .
的内角
的对边分别为
,则下列说法正确的是( )
![](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)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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解题方法
5 . 在
中,
.若
的最长边的长为
.则最短边的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b5cb4cb099c9e1a19c60d7bd0322f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20838e72faf737614d76fcee82ab6c5.png)
A.![]() | B.![]() | C.2 | D.![]() |
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2024-04-24更新
|
1769次组卷
|
5卷引用:山东省泰安市泰山国际学校2023-2024学年高一下学期3月月考数学试题
山东省泰安市泰山国际学校2023-2024学年高一下学期3月月考数学试题(已下线)6.4.3.2?正弦定理15种常考题型归类(1)-高频考点通关与解题策略(人教A版2019必修第二册)(已下线)6.4.3.2 正弦定理——课后作业(巩固版)广东省韶关市2024届高三综合测试(二)数学试题广东省佛山市南海区桂城中学2024届高三下学期4月月考数学试题
2024·全国·模拟预测
解题方法
6 . 已知角
的终边过点
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8902bff3e60ecebdcd71bb2ee8bb97b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
7 . 已知角
的顶点在坐标原点
,始边与
轴的非负半轴重合.若角
的终边绕着原点按顺时针方向旋转
后经过点
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
A.![]() | B.![]() | C.![]() | D.3 |
您最近一年使用:0次
解题方法
8 . 已知
,
,且
,则
的最大值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f07029c97c324d32f258f18a96654a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122186e02d212fbbbb29291e56e9ceff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad3c1424841f905de42b18326f9acfa.png)
您最近一年使用:0次
2024-04-08更新
|
383次组卷
|
2卷引用:湖北省宜荆荆随恩重点高中教研协作体2023-2024学年高一下学期3月联考数学试卷
名校
9 . 在
中,已知
是方程
的两个实根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebd05450aba4b97bda55136dce96aa6.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c926498dd79f6817e8dd56ed2a1cf57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d14d3ff2dd1ab4a0f382354d85c44e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebd05450aba4b97bda55136dce96aa6.png)
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解题方法
10 . 如图,设
是单位圆和
轴正半轴的交点,点
是单位圆上的一点,
是坐标原点,
,且
且
.
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9b6016943827cd505ed34b83c865a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f473481e4c02438f9090f1bc1be6a092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f612c3fee55e7aa97672135f781a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ae2bb53fc7db5ffe0ef02b7490a1eb.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/726db0d1d29fd6df456c946f5da5376c.png)
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