化简:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a64ef06681ada4173af53746cf6dc0.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a64ef06681ada4173af53746cf6dc0.png)
2023高一上·全国·专题练习 查看更多[2]
更新时间:2024-01-16 13:14:54
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填空题-单空题
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解题方法
【推荐1】若
,
是第二象限的角,则
=_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a892dbcef7934d97016bb190d94e0bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850dba25bf0f5f13541bf9b6ec12b84d.png)
您最近一年使用:0次
填空题-单空题
|
容易
(0.94)
名校
【推荐2】两角和差公式及二倍角公式
(1)写出两角和的正弦公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1292d729b44dd285370df8b0d4ca4f83.png)
_______________ ;
(2)写出两角差的正弦公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65fcb79b9d457166d45e2d63bd681091.png)
________________ ;
(3)写出两角和的余弦公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005fa32731cd8290847a115f78b42efa.png)
________________ ;
(4)写出两角差的余弦公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c634aa65493615fbb40f1352a88c5aa3.png)
_____________ ;
(5)写出二倍角的正弦公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc903c19f7b3b0aa58cdb0cdb7b062a0.png)
___________
(6)写出二倍角的余弦公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2b8dae45cd30a752aedb1ca66c30a.png)
_____________
(7)写出二倍角的正切公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa3d3ca8ae9c034b384ba8267808553.png)
__________
(1)写出两角和的正弦公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1292d729b44dd285370df8b0d4ca4f83.png)
(2)写出两角差的正弦公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65fcb79b9d457166d45e2d63bd681091.png)
(3)写出两角和的余弦公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005fa32731cd8290847a115f78b42efa.png)
(4)写出两角差的余弦公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c634aa65493615fbb40f1352a88c5aa3.png)
(5)写出二倍角的正弦公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc903c19f7b3b0aa58cdb0cdb7b062a0.png)
(6)写出二倍角的余弦公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2b8dae45cd30a752aedb1ca66c30a.png)
(7)写出二倍角的正切公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa3d3ca8ae9c034b384ba8267808553.png)
您最近一年使用:0次