如图,在
中,
,
是边
上的高,若
,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be44ecc4ee87f8f0678ea24a444be84f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/2/c04fbf7e-af43-4e77-868d-84aca316eb40.png?resizew=199)
更新时间:2024-03-02 22:51:23
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【推荐1】如图所示,在Rt△ABC中,CD是斜边AB上的高,∠ACD=40°,则∠EBC=_____ 度.
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【推荐2】在
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真题
【推荐1】如图,
为等腰
的外接圆,直径
,P为弧
上任意一点(不与B,C重合),直线CP交AB延长线于点Q,
在点P处切线PD交BQ于点D,下列结论正确的是_________ .(写出所有正确结论的序号)
①若
,则弧BP的长为
; ②若
,则AP平分
;
③若
,则
; ④无论点P在弧BC上的位置如何变化,
为定值.
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【推荐2】我们把顶角互补的两个等腰三角形叫做友好三角形.在
中,
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都在边
上,
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是友好三角形,那么
的长为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eeb0c8df3d8c5260768c5e407b3583a.png)
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