21-22高一·湖南·课后作业
1 . 在单位圆中,角
,
的正弦线分别为
,
,若
,求
,
之间的等量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e25d00e8d9c3afaa664c667aa4525dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9983f618e3bdc104350e7d258f75fdab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2116193d2faf3cc4b5b95c53e80551fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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2022-03-08更新
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3卷引用:7.2 三角函数概念(1)-【帮课堂】(苏教版2019必修第一册)