![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b844d33a2037bcd648f822ec526ecca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6369cd1db768436809404b1f3c4132c0.png)
更新时间:2021-11-30 23:05:00
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【知识点】 已知弦(切)求切(弦)解读
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填空题-单空题
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较易
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解题方法
【推荐1】已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d59142ab797807e560fe8adf63e6ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3d43f3e7109d1e4173ee4993c9a148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐2】设θ为第二象限角,若tan(θ+
)=
,则sinθ+cosθ=_________ .
![](https://img.xkw.com/dksih/QBM/2013/7/18/1571293397958656/1571293403693056/STEM/a4e075162bd04b74a02cf62c20dc0ac6.png?resizew=7)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
您最近一年使用:0次