已知
,又
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63e88d9ce4afb1766093727c466c577.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9510e0b8c0d880f40590d3831f70f12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a077ceccea768ed3c664d38d55242fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa92f6b546937d3be81df143b5bd2ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63e88d9ce4afb1766093727c466c577.png)
更新时间:2022-02-09 12:01:07
|
相似题推荐
填空题-单空题
|
适中
(0.65)
【推荐1】在△ABC中,若sin(2π-A)=-
sin(π-B),
cosA=-
cos(π-B),则C=________ .
![](https://img.xkw.com/dksih/QBM/2018/8/1/2030702004625408/2038365438967808/STEM/a1c595a810664efc9476fe1c94a65849.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2018/8/1/2030702004625408/2038365438967808/STEM/d90a3236aeca474abaf4bf7b50b81f69.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2018/8/1/2030702004625408/2038365438967808/STEM/a1c595a810664efc9476fe1c94a65849.png?resizew=17)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐2】已知
,2sin2α+1=cos2α,则cosα=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0eef742bb017d3f68c742255579cb2.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐1】如图,已知△
中,
,延长
到点
,连接
,若
且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45723dce96b74f027adcb1a4ecd19db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def26b3c1c08356f8fa49c85fe19476b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/28/cfd78f9f-9977-46e1-b193-5f36c188ee12.png?resizew=196)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
【推荐2】
的内角
,
,
的对边分别为
,
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4239165ee886662653d8da4c567a79d.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6faeed1b75b199eeb1662433168cad61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4239165ee886662653d8da4c567a79d.png)
您最近一年使用:0次