名校
1 . 已知角
的顶点与原点重合,它的始边与
轴的非负半轴重合,终边过点
,定义:
.对于函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a7bbe4b2b227877045356342144b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e53dc0bdf4ca97b48c1542078c267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20849088b558d5a235513a4756d8216.png)
A.函数![]() ![]() |
B.函数![]() ![]() |
C.将函数![]() ![]() |
D.方程![]() ![]() |
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