如果直线
与
轴正半轴的夹角为锐角
,那么下列各式正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
23-24九年级上·上海静安·期末 查看更多[2]
更新时间:2024-01-13 10:37:39
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【推荐1】如图,在正方形网格中,点A、B、C都在格点上,则
的值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/9/0311376e-4376-4cee-9da6-c1329909d33a.jpg?resizew=118)
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A.1 | B.![]() | C.![]() | D.![]() |
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【推荐2】四个全等的直角三角形围成一个大正方形,中间空出的部分是一个小正方形,这样就组成了一个“赵爽弦图”(如图).如果小正方形面积为49,大正方形面积为169,直角三角形中较小的锐角为θ,那么
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/1/e16b5149-cffe-4caa-848b-1daf1cb6c3f9.png?resizew=99)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7980e96d332aa0b4ed25c2dbff79b366.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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真题
【推荐1】如图,点A为∠α边上任意一点,作AC⊥BC于点C,CD⊥AB于点D,下列用线段比表示
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![](https://img.xkw.com/dksih/QBM/2015/8/13/1573896464719872/1573896470904832/STEM/2797e7e4422c4fa08de0b383f6bac35e.png)
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【推荐2】如图,在平面直角坐标系中,
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【推荐1】如图,
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【推荐2】点E在射线OA上,点F在射线OB 上,AO⊥BO,EM平分∠AEF,FM平分∠BFE,则tan∠EMF的值为( )
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