1 . (1)若
为锐角,
,求角
;
(2)如图,圆心在原点,半径为2的圆与
正半轴交于
点,
,
是圆上的两动点,它们同时从
点出发沿圆周做匀速运动,点
逆时针方向每秒转
,点
顺时针方向每秒转
,当它们出发后第2次相遇时,求该点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc14778010a33f90902ff17b1ec0ac73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab4d71338499f31d37f88730ee280aaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(2)如图,圆心在原点,半径为2的圆与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/b7ff301e-4a10-4a43-85e6-6f719cfd8470.png?resizew=185)
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2 . 已知
是三角形的一个内角,且
和
是方程
的两根,
(1)求实数
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b207290489430f256a01fc2b4a0431.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a8826ed5dcd7b251f8f290ae98535c.png)
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3 . 如图, 椭圆
的右焦点为
,过点
的一动直线
绕点
转动,并且交椭圆于
两点,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/2022/6/17/3003466465910784/3006188991668224/STEM/aebf6761b71240a6943db93c8219b518.png?resizew=333)
(1)求点
的轨迹
的方程;
(2)在
的方程中, 令
,
.
①设轨迹
的最高点和最低点分别为
和
,当
为何值时,
为正三角形?
②确定
的值, 使原点距直线
最远, 此时, 设
与
轴交点为
,当直线
绕点
转动到什么位置时,
的面积最大, 并求出面积的最大值?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b77a34ceb387940caecbe9cb1d5dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1e2b23e8994b2960affe9efccd622b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2022/6/17/3003466465910784/3006188991668224/STEM/aebf6761b71240a6943db93c8219b518.png?resizew=333)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e598f08618337323f0ca508a99c4331c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9466e23ac5c00b30ea5517b144ce44f.png)
①设轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33181b27b10690b4913595f8c1f46e.png)
②确定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea69edc95ed3445574e0272896b3d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
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解题方法
4 . 已知在三角形
中,
,三角形的面积
.
(1)若
,求
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b104867a12d24a353d94858c2fa17c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c8066bc9a3d4fe96c0789375f87711.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82cf8c29d0d0a12575b9caa35312e041.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e495a644c07930c82effbf154c5f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7413702b599edc33af760533efa9d8ca.png)
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2022-06-11更新
|
1604次组卷
|
8卷引用:上海市光明中学2022届高三模拟(一)数学试题
上海市光明中学2022届高三模拟(一)数学试题2022届上海市普通高等学校招生全国统一考试数学模拟试题(一)(已下线)第04练 解三角形-2022年【暑假分层作业】高一数学(苏教版2019必修第二册)(已下线)第06讲 任意角三角函数、诱导公式及恒等式-2(已下线)专题08平面向量及其应用必考题型分类训练-3(已下线)专题20 解三角形(已下线)考向16 解三角形(重点)(已下线)专题20 解三角形-3
5 . 一质点A从原点出发沿x轴的正向以定速度v前进,质点B从
与A同时出发,且与质点A以大小相同的速度向某方向前进,A与B之间的最短距离为1.
(1)求B的前进方向与x轴正向间的夹角
;
(2)当A、B间距离最短时,求A、B的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa71aa2ea224669698850108751a71a.png)
(1)求B的前进方向与x轴正向间的夹角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)当A、B间距离最短时,求A、B的坐标.
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解题方法
6 . 已知角
是第三象限角,
,求下列各式的值:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef966cdd137b3b10e290201b4d17542e.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cf78a62dd5283804590698b0e7d582.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31508c5219acafd86a31be501868e45d.png)
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2022-04-28更新
|
1062次组卷
|
5卷引用:上海市上海师范大学附属中学2021-2022学年高一上学期期末数学试题
名校
解题方法
7 . 在
中,若
,
,求
的三个内角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1d3c323cc70bfbac87d377f0a08250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8253a160b93c1162af6817dbde0dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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8 . 已知角
终边上一点
的坐标为
.
(1)化简下列式子并求其值:
;
(2)求角
的集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a823a5c40ccda40f9bdbf0c1b8f5997.png)
(1)化简下列式子并求其值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f2f370de32099f77637617dce5cc5b.png)
(2)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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解题方法
9 . 已知
.求
(1)
的值;
(2)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b5374da188eacc1f979258bd8bdcad.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de977a667914041845b6fe50cde173ea.png)
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2022-04-28更新
|
616次组卷
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3卷引用:上海财经大学附属北郊高级中学2021-2022学年高一下学期3月月考数学试题
10 . 已知
,求
(1)
的值;
(2)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde1a87f63afdd748a8a7c7fef824088.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc24d605ad707ad0e76059d8a31f50d3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f5f293c33c760cfb694b7fa225fc38.png)
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