化简
(1)
;
(2)已知
是第三象限角,化简
;
(3)已知
,
为锐角,求
的值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b8456bc37c71d6445dbe44ffab24a3.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e61123c3d2642a2de5582967f581df.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3efbc1339610860525414a95988adc39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284791c2326ba723725f7ecf4e493546.png)
23-24高一上·河南郑州·阶段练习 查看更多[2]
更新时间:2023-12-24 21:17:37
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这三个条件中任选一个,补充在下面的横线上,并解答问题.
已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9e3b2b77bc9b54f3ae0b332e705c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed53925cace8212e87a4d3bad6463718.png)
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适中
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【推荐2】已知角
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca6c6b953e6f38857eef417e0646d91.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1be0fc127fae22cd01d1ee015f725e9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
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