1 . 若
,
,
,则
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71d65c9be1d0dc8c8e559494aaf34b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37848d533868519b0938c460d1cb6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394518f518e8eee4c6370fdfe90e71b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab138a74db444886abc7fe18947f7a3e.png)
您最近一年使用:0次
2 . 若
为第四象限角,则
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7ae7d2b1dafd0079b3b9f317555870.png)
您最近一年使用:0次
3 .
,
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e80e971567d38efa3699befbd972ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecf0c218724219349993290aff14fc6.png)
您最近一年使用:0次
4 .
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5d22adf4384f82306b445eebd8015e.png)
您最近一年使用:0次
5 .
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c421337812afd6cc83cbf4bd8f25a7f9.png)
您最近一年使用:0次
6 . 对任意角
,都有
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e09f1768c70617a578cdd9b2718983bc.png)
您最近一年使用:0次
7 . 存在某个角
,使
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342c52436f5e76dbff46c9e358872e6c.png)
您最近一年使用:0次
8 . 存在角
,
,使得
.( )
![](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/30ba299906b6ac06008cf48bf8222072.png)
您最近一年使用:0次
9 . 设
,
为锐角,且
,则
.( )
![](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/e78aa9e3a24b40d57a6b5a179de171b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83b5ea3395b72e89077fc99eb255a847.png)
您最近一年使用:0次
10 . 对于任意角
,
,总有
.( )
![](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/249bbadb6ca41fff4b978f416e34e639.png)
您最近一年使用:0次