计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731b48bfb722fc841c02317d433f0c3e.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731b48bfb722fc841c02317d433f0c3e.png)
更新时间:2021-06-12 14:26:50
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【推荐2】若tan(α–15°)=
,则锐角α的度数是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
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