1 . 已知全集
,集合
,集合
.
(1)求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3344b4b2541031b88aa04025bbcd82c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500f2d5fbff755afe7b8e64d1f71cd5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2628e7b8a0677463b01fd0a39ce50461.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81919684bc4047d376c7e57dc6c8f1c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5f52e8d5cf759d2b7e7c4d56419a3e.png)
您最近一年使用:0次
解题方法
2 . 记
.
(1)化简
;
(2)若
为第二象限角,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ebb8d51f4788f53d24d57368b243a90.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79167f288fce0086f3a7e36dd5bf80fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
您最近一年使用:0次