(1)求
的值;
(2)已知
,其中
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2331cb4336e3f49afaa7b5c7fec25502.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90112da078a3f3b0797bd5b2c2d43591.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca29e1ffd2d4b2aca1cdedceabf5895.png)
更新时间:2021-07-27 00:08:21
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解答题-问答题
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较易
(0.85)
解题方法
【推荐2】(1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2f8bf97951d77243553efcf08dd304.png)
(2)已知
是第三象限角,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2f8bf97951d77243553efcf08dd304.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573924a20a89954937939d4e88d68e01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0334f655f51ec1c8babdc2901c16672b.png)
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