已知角
终边上一点
,
,且
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd93a7389f6f3cf2ec3b4bb1878e4eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f331c3d96c5812a620e326373747eb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388e49d28e3b990023f226f7a1617225.png)
21-22高一下·安徽宿州·期中 查看更多[3]
安徽省宿州市十三所重点中学 2021-2022学年高一下学期期中联考数学试题(已下线)第四章 三角函数与解三角形 第二节 同角三角函数的基本关系与诱导公式 (讲)(已下线)模块三专题2 解答题分类练专题1(三角函数的定义)【高一下人教B版】
更新时间:2022-05-01 23:46:35
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解答题-计算题
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适中
(0.65)
解题方法
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f505c2ddd1bcf06a20f401ca12a0f7a7.png)
(1)化简
;
(2)若角
终边有一点
,且
,求
的值;
(3)求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f505c2ddd1bcf06a20f401ca12a0f7a7.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(2)若角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db48ef69ec97b95e855f7838d7ba3edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5fdec18642892e189c93a15b0d91cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe4bddd3c9ac738b743b1214ef33a8f.png)
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【推荐2】如图,单位圆
与
轴正半轴交于点
,角
与
的终边分别与单位圆交于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5101b78862cbffb9120bceeff9860d10.png)
两点,且满足
,其中
为锐角.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/6afdf153-8126-4944-bf22-47b8d6c82508.png?resizew=178)
(1)当
为正三角形时,求
;
(2)当
时,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5101b78862cbffb9120bceeff9860d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5247fbe076c0ee51b8886c2dc4f33da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b05fa3fa9b0dfc8850a9f1c10d3a2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/6afdf153-8126-4944-bf22-47b8d6c82508.png?resizew=178)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a95e60012847d909e2ef7eaeb949cbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a79cd3efa8dfbd2caca0139539118bb.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b7ad87efec65c999ab8953944b98f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97aacfa18f24b8d48e169127bfe2f7f4.png)
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【推荐1】请解决下列问题
(1)已知
,求
的值
(2)已知
,求
的值
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1a5ce77cfa3a514f0f08b6258c65b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c5b9690cbcf268e83f6ee50b96b971.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee213d4e6ba3868b199b84a4c49985f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced83a6e76e207da6d674b557c2a8499.png)
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解题方法
【推荐2】已知
.
(1)若
,求
的值;
(2)若
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0006586b9521c00de6a28ef04f6f9d7d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2fd0d23d577129199cba8c18208631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5ff5a2e7663e6a21ccea3149a10113.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bf864c1f2fe64d290fa3c804237169e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e620eb22812f53c37961c73729dadf2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
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