名校
解题方法
1 . 求值
(1)已知
是第三象限角,且
,求
的值;
(2)已知
,求
的值.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07a22d487e54ec1f2719b7a50a82965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d74c74c3c6890362d623a44fcc6e41f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82dabe724194628c06966777a914e961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f35152720e43c6403d43bef47c0377d.png)
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2 . 已知函数
的部分图象如图所示,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/5f48184d-3a53-4795-8adb-70ad28baad79.png?resizew=173)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0ef9d537e1849ed448318247dce9f7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/5f48184d-3a53-4795-8adb-70ad28baad79.png?resizew=173)
A.![]() ![]() |
B.点![]() ![]() |
C.若![]() ![]() ![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
2024-01-31更新
|
470次组卷
|
3卷引用:河南省名校联盟2023-2024学年高一上学期期末数学试题
24-25高一上·全国·课堂例题
3 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4bd6aa3b2d8257195c60c53f8947bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a1cfc9ddaad5361ba8d808ac254593.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
4 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b010c03391a5303d984f2ab53bf22a4b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-01-24更新
|
512次组卷
|
3卷引用:陕西省西安市鄠邑区2023-2024学年高一上学期期末考试数学试题
24-25高一上·全国·课堂例题
5 . 已知
,那么
等于_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b624704b74a483118a0885fddddd9645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b8e36d4e30abde0a535a12bf87f861e.png)
您最近一年使用:0次
解题方法
6 . 已知
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda318adf65c6b6fd45f651365f52346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b7f59e7ad7bcc2d1cdd9aa4d2f99b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005fa32731cd8290847a115f78b42efa.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 在平面直角坐标系xOy中,半径为2的圆O与y轴非负半轴的交点为
,动点P从
出发,以1rad/s的角速度按顺时针方向在圆O上做匀速圆周运动,则2s时点P的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
8 . 求下列各式的值:
(1)化简:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37551f77f763228e65c01933512ca1f8.png)
(2)已知
,求
的值.
(1)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37551f77f763228e65c01933512ca1f8.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9221adab00dc0468cd3b78a70760ddcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c2feea7032064f966311b83493fafb.png)
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名校
解题方法
9 . 设
内角
,
,
的对边分别为
,
,
,已知
.
(1)求
;
(2)若
,且
的面积为
,求角
的角平分线的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/21440b7af86688c3bc9e3f09b9a2f4dd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd5b9bbd3d22bd2cef53dd4b9691257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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10 . 已知
,求下列各三角函数的值:
(1)
;
(2)
;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f9105ef2e1eab7fc2b531acb270950.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed15f6a1e65e6974c845b41c6d5f3fc.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d7130f678bb4b096f4ee9648f3c90d.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4dbaa22a8bce8d8c19dacf8fcc5251.png)
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