如图,修建抽水站时,沿着坡度为i=1:6的斜坡铺设管道.下列等式成立的是( )
![](https://img.xkw.com/dksih/QBM/2017/4/7/1660598951567360/1662772915011584/STEM/5533c6f1e16448958d959fd6ad88968c.png?resizew=229)
![](https://img.xkw.com/dksih/QBM/2017/4/7/1660598951567360/1662772915011584/STEM/5533c6f1e16448958d959fd6ad88968c.png?resizew=229)
A.sinα =![]() | B.cosα=![]() | C.tanα=![]() | D.tanα=2 |
更新时间:2017-04-10 15:43:04
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【知识点】 求角的正切值
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【推荐1】如图,已知点E是矩形ABCD的对角线AC上一动点,正方形EFGH的顶点G,H都在边AD上,若AB=4,BC=5,则tan∠AFE的值( )
![](https://img.xkw.com/dksih/QBM/2021/11/30/2862203193843712/2928470433579008/STEM/a6b2657c-3111-43f7-be99-63698bae309c.png?resizew=189)
![](https://img.xkw.com/dksih/QBM/2021/11/30/2862203193843712/2928470433579008/STEM/a6b2657c-3111-43f7-be99-63698bae309c.png?resizew=189)
A.![]() | B.![]() | C.![]() | D.![]() |
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