1 . 判断正误(正确的写正确,错误的写错误)
(1)半角公式对任意角都适用.( )
(2)
.( )
(3)对于任意
,
都不成立.( )
(4)
.( )
(1)半角公式对任意角都适用.
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82418104ff528cd594f390f51c569e6c.png)
(3)对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9883e09b1ac40ccaebcaec21e2871c56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996e0d157addb2a025b2438ddda8e067.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173d65ac02a841a07d30b5136b8d9c4d.png)
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2 .
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8376f4f7bb799ef17823ab017bfb4385.png)
您最近一年使用:0次