已知在Rt△ABC中,∠C=90°,AB=5,BC=4,则sinB的值是( )
![](https://img.xkw.com/dksih/QBM/2019/12/5/2348437002469376/2348582882803713/STEM/752ba5a90a5c4dbeb93f964e3132ffe3.png?resizew=177)
![](https://img.xkw.com/dksih/QBM/2019/12/5/2348437002469376/2348582882803713/STEM/752ba5a90a5c4dbeb93f964e3132ffe3.png?resizew=177)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2019-12-06 20:11:49
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【推荐1】如图所示的网格是正方形网格,点A,B,C都在格点上,则sinB的值为( )
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844612438392832/2927511756054528/STEM/5b0084215f374bf489ef7073bbf2c340.png?resizew=153)
![](https://img.xkw.com/dksih/QBM/2021/11/5/2844612438392832/2927511756054528/STEM/5b0084215f374bf489ef7073bbf2c340.png?resizew=153)
A.![]() | B.![]() | C.![]() | D.![]() |
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