如图,直线
相交于点
,
,垂足为点
,若
,则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d01bee924fc8d52776c8a36a1c0490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23162d8d2a833da1843f0442a2534be4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8667e1b258f010e95aed9b50334225dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15886bb1365d039d8e4450cae287788d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-04-27 20:50:46
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【推荐1】当光线垂直照射在太阳光板上时,接收的太阳光能最多.某一时刻太阳光的照射角度如图所示,要使此时接收的太阳光能最多,那么太阳光板绕支点A顺时针旋转的最小角度为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,点A,C,D,E在Rt
MON的边上,∠MON=90°,AE⊥AB且AE=AB,BC⊥CD且BC=CD,BH⊥ON于点H,DF⊥ON于点F,OM=12,OE=6,BH=3,DF=4,FN=8,图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/2022/2/8/2912177167327232/2913939894214656/STEM/c6a1dce9-99d5-4229-a4ab-a47759986b22.png?resizew=186)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/2022/2/8/2912177167327232/2913939894214656/STEM/c6a1dce9-99d5-4229-a4ab-a47759986b22.png?resizew=186)
A.30 | B.50 | C.66 | D.80 |
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【推荐1】如图,两条平行线
,
被第三条直线
所截.若
,则
的度数为( )
![](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/73b7ad6a997d33e94919f8bdb133ef48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
A.40° | B.50° | C.60° | D.70° |
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【推荐2】如图,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a166225f9ada66c353e21ee2262d42c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc310194575262fb45352c2fbc19868.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/18/883ba7e2-1909-46b9-8a68-20f27f290a45.png?resizew=92)
A.50° | B.40° | C.140° | D.10° |
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