若
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77166e64d2e1f8328dae88ebf995e98e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b9f1f872a4208a7f21dedcc50127619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc8ef902dc3481ae24d888f57466154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77166e64d2e1f8328dae88ebf995e98e.png)
更新时间:2020-01-31 22:00:35
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【知识点】 sinα±cosα和sinα·cosα的关系解读
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填空题-单空题
|
适中
(0.65)
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解题方法
【推荐1】若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40bc0232da44b52868ba66af5cdbb72a.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a91137b4a1eee767becc3fbbbd61371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40bc0232da44b52868ba66af5cdbb72a.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐2】已知sinα+cosα=
,则sinα-cosα=_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e051d14fd6a787387995331f5e6d026.png)
您最近一年使用:0次