若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee98e8b9dd237e417a6ebbcd79261e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
17-18高三上·湖南永州·阶段练习 查看更多[4]
湖南省永州市祁阳县第一中学2018届高三10月月考数学(文)试题宁夏石嘴山市第三中学2018届高三上学期期中考试数学(文)试题福建省永定第一中学2022-2023学年高一下学期数学摸底考试补偿练习试题(已下线)【第二课】5.5.1课时2 两角和与差的正切公式
更新时间:2017-11-26 20:21:04
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名校
【推荐1】已知角
是三角形一内角,且
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【推荐2】已知
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______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c4266f962def23c1dc0bd66a502912.png)
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【推荐3】若
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【推荐1】已知
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【推荐3】设
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