1 . 如图,已知A,B是单位圆圆O上的点,点A在第一象限,点B在第二象限,C为圆O与x轴正半轴的交点,
.
![](https://img.xkw.com/dksih/QBM/2020/5/27/2471781248147456/2471988372226048/STEM/087080d3b43847898ebb83742b678ec1.png?resizew=142)
(1)求点A的坐标;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514717ea8bb5beb77f2beb395d9d64d9.png)
![](https://img.xkw.com/dksih/QBM/2020/5/27/2471781248147456/2471988372226048/STEM/087080d3b43847898ebb83742b678ec1.png?resizew=142)
(1)求点A的坐标;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd33fd61545ef78df7bcde667baba30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c22a55176030c0156f94fe339888350d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d287e7f86a20acfbd1254b412352cdf.png)
您最近一年使用:0次
名校
2 . 如图,点
是锐角
的终边与单位圆的交点,
逆时针旋转
得
,
逆时针旋转
得
,…,
逆时针旋转
得
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/64280e8b-78d7-4ced-b885-869daf495248.png?resizew=193)
(1)若
的坐标为
,求点
的横坐标;
(2)若点
的横坐标为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88ec2dbad3fa6208c0493291e5ccdcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d1308d5db144e31b4d0211c63ef52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1652145a4785b50fa22fdd8c63f724b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1652145a4785b50fa22fdd8c63f724b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d1308d5db144e31b4d0211c63ef52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ae18c3151ef1283fbd7854562fdfc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cc88ab4bf81558263875b7bfc0f6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926d1308d5db144e31b4d0211c63ef52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9123b1c8cb0bbaca44e8464bee03678.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/64280e8b-78d7-4ced-b885-869daf495248.png?resizew=193)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bfd8da8cf8cfacb41ba262bfe0d77cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391d23b5ffaf0444a1d1a1550a0f3527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec69d6dcf06d9bc5b03cd8a4e60a3cb.png)
您最近一年使用:0次
2020-05-22更新
|
414次组卷
|
3卷引用:江苏省南通市启东中学2020届高三下学期高考预测卷(一)数学试题
名校
解题方法
3 . 如图,在平面直角坐标系
中,以
轴正半轴为始边的锐角
的终边与单位圆
交于点
,且点
的纵坐标是
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/4dd89ab0-e477-4903-8d90-d12d40dca233.png?resizew=153)
(1)求
的值:
(2)若以
轴正半轴为始边的钝角
的终边与单位圆
交于点
,且点
的横坐标为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83fb9ac8a18e78a4c56da79514b5ccb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/4dd89ab0-e477-4903-8d90-d12d40dca233.png?resizew=153)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed83bff03f947be061fd5681535e0058.png)
(2)若以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71d141e18938319cc05063d29c111557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
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2020-03-18更新
|
937次组卷
|
4卷引用:2019届江苏省南京师大附中高三下学期5月模拟数学试题
2019届江苏省南京师大附中高三下学期5月模拟数学试题江苏省南京师范大学附属中学江宁分校2019-2020学年高三上学期12月调研考试数学(文)试题(已下线)专题13+简单的三角恒等变换(基础练)-2020-2021学年高一数学十分钟同步课堂专练(人教A版必修4)甘肃省兰州大学附属中学2021-2022学年高三上学期第三次月考理科数学试题
4 . 如图,已知点
是单位圆上一点,且位于第一象限,以
轴的正半轴为始边、
为终边的角设为
,将
绕坐标原点逆时针旋转
至
.
![](https://img.xkw.com/dksih/QBM/2020/2/1/2389655221157888/2389690518863872/STEM/925310f73cfc4bf8b01f38b7992bb703.png?resizew=133)
(1)用
表示
、
两点的坐标;
(2)
为
轴上异于
的点,若
,求点
横坐标的取值范围.
![](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/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://img.xkw.com/dksih/QBM/2020/2/1/2389655221157888/2389690518863872/STEM/925310f73cfc4bf8b01f38b7992bb703.png?resizew=133)
(1)用
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada25f76504c3fd1226da43c94cb4277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2020-02-01更新
|
199次组卷
|
3卷引用:2016届上海市黄浦区高三上学期期末调研测试(文)数学试题