已知
,且
为第四象限的角,求
的正弦,正切,余切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0134d57e0c86a60b58226a8dfc105269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
23-24高一上·上海杨浦·期末 查看更多[2]
更新时间:2024-01-14 09:30:32
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【知识点】 三角函数的化简、求值——同角三角函数基本关系解读
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解答题-计算题
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(0.94)
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解题方法
【推荐2】已知
是锐角,且
.
(1)化简
;
(2)若
,求
的值,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5f24b9798eaf5706c2aa267ad037dd.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ffe2a488a1a7f561319c8531fb28f1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed03580542ad936f16a78dea69f3916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ffe2a488a1a7f561319c8531fb28f1.png)
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解答题-计算题
|
容易
(0.94)
名校
【推荐3】已知
为第三象限角,且
.
(1)化简
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c9121cede0ee0562e23b8a26b34616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec0e460565877a7d7c2c4dc3b979f893.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bfb2313e2b47865ac0cc7355abf996.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c69d6a4ff0a4880168238628b257ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8cdbb75f286bbddb6a396bfcc6bbe7c.png)
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