解题方法
1 . 求值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa43db7212d7fc84784c153cfc87d0c.png)
您最近一年使用:0次
解题方法
2 . 已知实数
,
满足
,
,求
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44c9a11df7ecda38f75054aea50e096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf817718e3b0428cf9193a247fca9030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0eb930e16c0f7cb646dbe540d7b3194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237000128125c7c0709d5093a7382a79.png)
您最近一年使用:0次
3 . 已知函数
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dc7aa6d059c9f81bcf46b3a029612a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd01c9aa51ca5ad7f9f992f0b6c30c85.png)
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解题方法
4 . 在△
中,内角
、
、
对边的边长分别是
、
、
,△
的面积为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)若
,
,
,求
;
(2)若
,求角
;
(3)若
,
,求
、
、
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e38f550e95b2950f91e8ec1798b94109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a2dd89c37b60b4596ac30e339aa0000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c114b28a55de86d8f791c1c790a71a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be4a570e7b3e4dfff30ef2ad943bf56f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2da7d80ab4669bdffab0b359f6e102.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)
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解题方法
5 . 在
中,内角A,B,C的对边分别是
,
,
.如果
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/906345813c7b99e2ba2381f459d8908c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50da4b2d6e63c4865331429ff98fcc95.png)
您最近一年使用:0次
2020-03-05更新
|
447次组卷
|
2卷引用:人教A版(2019) 必修第二册 必杀技 第6章 第6.4节综合训练
6 . 在复平面内,设
为坐标原点,点
所对应的复数分别为
,且
的辐角主值分别为
,模长均为1.若
的重心
对应的复数为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d860cb86e1467ac24010aecfc7a425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d860cb86e1467ac24010aecfc7a425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9baca3aafb52803b02ba8b2604e0827c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673f7e66c2a252da4c77c70d90c8cec.png)
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2020-03-01更新
|
1013次组卷
|
2卷引用:人教A版(2019) 必修第二册 突围者 第七章 第三节 课时1 复数的三角表示式
解题方法
7 . 在
中,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a74c3e9a8f3f11e98b4fa659a97679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b0a7f4f78dae320f537920c5811cf.png)
您最近一年使用:0次
2020-02-21更新
|
393次组卷
|
3卷引用:人教B版(2019) 必修第三册 过关斩将 第八章 向量的数量积与三角恒等变换 8.2.4 三角恒等变换的应用
解题方法
8 . 如图,在四边形ABCD中,A为锐角,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/7646372f-d82f-41c5-9490-e018de5e7314.png?resizew=146)
(1)求
;
(2)设
、
的外接圆半径分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4714929b31acc0efe19f729aa2a6b82.png)
,若
恒成立,求实数m的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c4bc869563c69b1bbdbd72c85374f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/7646372f-d82f-41c5-9490-e018de5e7314.png?resizew=146)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a816ae82b7f347264c5e21383aa02fcf.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73636989e83905f8800a865c2b608c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4714929b31acc0efe19f729aa2a6b82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3e95410f3b4fcb0cba425b521d1f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced4e6bcb70c37433de91fadee0687ae.png)
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2020-02-15更新
|
909次组卷
|
3卷引用:2020届重庆市康德卷高考模拟调研卷理科数学(二)
2020届重庆市康德卷高考模拟调研卷理科数学(二)(已下线)专题06 三角形中的最值问题(第一篇)-备战2020年高考数学大题精做之解答题题型全覆盖北师大版(2019) 必修第二册 金榜题名 第四章 三角恒等变换 §2 两角和与差的三角函数公式 2.4 积化和差与和差化积公式
解题方法
9 . 求证:(1)
;
(2)
;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6c1697fb76608497c6768b71f9ac1a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e248fcba8091a91b8cc1ac429fe2c09e.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa741bf4347e9b8a43ad8e7f5c5581a0.png)
您最近一年使用:0次
2020-02-08更新
|
1158次组卷
|
4卷引用:人教A版(2019) 必修第一册 逆袭之路 第五章 5.5 三角恒等变换 5.5.2 简单的三角恒等变换
解题方法
10 . 求证:(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b9dcd27b3414aead445a9e655cf61b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b5cc8fde0d45f3694fcab08d8ff286.png)
您最近一年使用:0次
2020-02-08更新
|
515次组卷
|
4卷引用:人教A版(2019) 必修第一册 逆袭之路 第五章 5.5 三角恒等变换 5.5.2 简单的三角恒等变换
人教A版(2019) 必修第一册 逆袭之路 第五章 5.5 三角恒等变换 5.5.2 简单的三角恒等变换(已下线)第三章 三角恒等变换【专项训练】-2020-2021学年高一数学下学期期末专项复习(人教A版必修4)(已下线)课时5.5.2(考点讲解)简单的三角恒等变换-2021-2022学年高一数学新课学习讲与练精品资源(人教版2019必修第一册)人教A版(2019)必修第一册课本例题5.5 三角恒等变换