一幅直角三角板,
按图中所示位置摆放,点D在边AB上,
,则
的度数为________ 度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d59e6d22ba1dcfad8dfb21ef5f6770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13bd9e8b54864ca44115d24a5aeeb83c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3e081637bcea5368cc72370bae283b.png)
![](https://img.xkw.com/dksih/QBM/2021/5/27/2730009811173376/2730984392785920/STEM/fb62a705-e471-47ab-8d5e-9c99499f5def.png)
更新时间:2021-05-28 21:04:52
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