△ABC中,∠C=90°,tanA=
,则sinA+cosA=_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
更新时间:2018-04-01 22:31:09
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【推荐1】新定义:由边长为1的小正方形构成的网格图形中,每个小正方形的顶点称为格点.如图,已知在
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【推荐1】如图,矩形ABCD的边长AB=8,AD=4,若将△DCB沿BD所在直线翻折,点C落在点F处,DF与AB交于点E.则cos∠ADE=________ .
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