已知
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec393eec45c4b0d474902b23c3d70bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e668faf6c431fcf8d1aa8da86789fdf.png)
22-23高一下·山东东营·期末 查看更多[3]
山东省东营市2022-2023学年高一下学期期末数学试题山东省青岛第十五中学2023-2024学年高二上学期期初考试数学试题(已下线)第10讲:三角函数中诱导公式、同角基本关系、任意角-《考点·题型·难点》期末高效复习
更新时间:2023-07-12 10:36:11
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【推荐1】已知角
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【推荐2】1626年,阿贝尔特格洛德最早推出简写的三角符号:
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(正割),1675年,英国人奥屈特最早推出余下的简写三角符号:
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(余割),但直到1748年,经过数学家欧拉的引用后,才逐渐通用起来,其中
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