1 . (1)已知角
终边上一点
,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907f9a1fbead4e70b5a26e54c95da29c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab00bbf46abc536ba0bdb19d0ccc667.png)
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135d867eac30e5a4cff409f70464a3fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907f9a1fbead4e70b5a26e54c95da29c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab00bbf46abc536ba0bdb19d0ccc667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a39ee003ce154b19561409afdddb7c.png)
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解题方法
2 . 在
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efd40d7a1e5ad0390bcbafa44187d44.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f8e6b5ba877fa40b87d67d9bba65bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd26e94df91ca56fafabbce6c3e577b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efd40d7a1e5ad0390bcbafa44187d44.png)
您最近一年使用:0次
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解题方法
3 . 已知
,计算:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4690a46dce144f1a1fe565e14df009.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86c029b19c9122eec40462dd2462869.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b058f77ff5582679e55b51200052d0d.png)
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10-11高三·江苏·阶段练习
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解题方法
4 . 若
,则
=__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236eb41bf50b7c6c051c08071841aebb.png)
您最近一年使用:0次
2016-12-01更新
|
1295次组卷
|
5卷引用:广东省广州市天河中学高中部2019-2020学年高一上学期期中数学试题
广东省广州市天河中学高中部2019-2020学年高一上学期期中数学试题(已下线)2012届江苏省棠张中学高三文科数学阶段测试一(已下线)2012届山东省桓台第二中学高三12月模块检测数学理科试卷【全国百强校】山东省枣庄市第八中学东校区2019届高三10月单元检测(月考)数学(理)试题陕西省渭南市韩城市新蕾中学2020-2021学年高一下学期第二次月考数学试题
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5 . 已知△ABC中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
![](https://img.xkw.com/dksih/QBM/2016/10/13/1573067280629760/1573067285741568/STEM/98f4298eba6645519ee1beec9a8fd5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
463次组卷
|
2卷引用:广东省江门市第二中学2019-2020学年高一上学期期中数学试题
解题方法
6 . 已知
,
.
(1)求
的值;
(2)求
的值;
(3)求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3210e3a441de8fa4b893e8084609bc86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c4266f962def23c1dc0bd66a502912.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84a25527e54ee2614e3b5e99ef8a3d4.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae8aaf830ba8ed8a772923d908ee966e.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c5a05a11f731194a845e68a0479ce4.png)
您最近一年使用:0次
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解题方法
7 . 已知
为三角形的一个内角,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a077ceccea768ed3c664d38d55242fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020高三·全国·专题练习
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8 . 已知sin α=2cos α,则sin αcos α=( )
A.-![]() | B.-![]() | C.![]() | D.![]() |
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9 . 已知
,求下列代数式的值.
(1)
;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931c069ae9cd4d00cf7f6582eeb969b3.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89459ec37cc8a2a0b23fe67b5bfef0ea.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d57eda04fa225dc5537b88eef1fdb84.png)
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10 . 已知
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573e1c0d7cedbd7581b8401d64fdba44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f372fe4ef0d08a9c4d2a7139a664d52.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次