求值:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a31aa3c99721b905cc1ec447b84ce7f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f863451dbc2531efaf83741cf416a471.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c92b32028d5f35cb2d2ef7a81bb14e.png)
21-22高一·全国·课前预习 查看更多[2]
(已下线)【导学案】第2课时 两角和与差的正弦、余弦、正切公式-2021-2022学年高一数学《新教材同步精典导学案》(人教A版2019必修第一册)(已下线)第01讲 三角函数(11个必刷考点)-《考点·题型·密卷》
更新时间:2021-12-28 23:54:47
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