解题方法
1 . 在
中,已知
,
,
.
(1)求角
;
(2)若
为锐角三角形,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf37709e1140f20b7a405e20d6e32060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147ab2d582e60bee6d81b27236e7288b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3b785ebbf5889849e872f461669f71.png)
您最近一年使用:0次
2023高三·全国·专题练习
名校
2 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e41f55409f0d511f5aa740236cdd3d1.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e41f55409f0d511f5aa740236cdd3d1.png)
您最近一年使用:0次
解题方法
3 . 已知
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/748c8bb20968912b0f1b077c807ff971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d094867bbf223b1df7b76f591f749ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2218b014360e33cdf10ea1086b000ef.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
4 . 已知向量
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c26bda539b7c10e607288263565427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4bb68bc1395f4cbcb5889aa39e1b7c.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
2023-07-27更新
|
481次组卷
|
3卷引用:贵州省安顺市2022-2023学年高一下学期期末教学质量监测数学试题
解题方法
5 . 在平面直角坐标系
中,角
,
以
为顶点,
轴为始边,
的终边与单位圆
相交于第四象限的点
,且点
的横坐标为
;
的终边是将角
的终边绕点
逆时针旋转
所得,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.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/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b35987b15f29625da5afbeffe7e549b.png)
您最近一年使用:0次
解题方法
6 . 在平面直角坐标系
中,角
以O为顶点,
轴为始边,
的终边与单位圆O相交于第四象限的点
;角
的终边是将角
的终边绕点O逆时针旋转
所得,则
的值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ceef0b6843d1fba0b8ec89359e1e58a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2380418bca9ec15393a8dfcaa51b0d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f35152720e43c6403d43bef47c0377d.png)
您最近一年使用:0次
解题方法
7 . 若
是第二象限角,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26756c07a2076e64ea0ff51121804ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4bb68bc1395f4cbcb5889aa39e1b7c.png)
A.![]() | B.3 | C.![]() | D.![]() |
您最近一年使用:0次