已知
,
,
,求:
(1)
和
的值;
(2)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bc052a11cf1a01445992672dde2836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f201f6e84279e80b85f394f4d930ed41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac18498031ad3033c6d8a4ca9fa9859c.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f35152720e43c6403d43bef47c0377d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad436744a7ad6a5e4be1bfde851f8ce8.png)
19-20高一下·上海金山·阶段练习 查看更多[5]
上海市金山中学、崇明中学2019-2020学年高一下学期5月联考数学试题(已下线)第19讲 两角和与差的正弦、余弦和正切公式-2021年新高考数学一轮专题复习(新高考专版)上海市金山中学2019-2020学年高一下学期期中数学试题上海市大同中学2021-2022学年高一下学期期中数学试题上海市嘉定区上海大学附属嘉定高级中学2022届高三上学期期中数学试题
更新时间:2020-08-20 22:17:55
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