化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a75e9df0e19d897fc0f896c8b6114d8.png)
更新时间:2017-02-22 01:29:38
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【知识点】 三角函数的诱导公式
相似题推荐
解答题-计算题
|
较易
(0.85)
解题方法
【推荐1】已知
.
(1)化简
;
(2)若
为第四象限角且
,求
的值;
(3)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f6e69eba90d436c90afd5e7853ee3a.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d33658e09092e727b0035825036fc8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61aba67d8c07b45d43f817b069e8bc8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐2】已知角
的顶点在坐标原点,始边与
轴的非负半轴重合,终边经过点
,且
.
(1)求
的值;
(2)求
的值
![](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/f70756a608a55251eb5683b8a0b110d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d33658e09092e727b0035825036fc8d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/022f6edc1a0185e2df12bf257cc2a16d.png)
您最近一年使用:0次