小明同学用木板制作一个带有卡槽的三角形支架,如图所示,已知
,
,
,小明的平板宽度为17cm,卡槽与
等长,小明同学能否将平板放入卡槽
内?请说明你的理由.(提示:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75ec1c73794dca0a18c1ec510398ccff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04549edff9448eb878e44e6e0f3af18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4cff624a1a7677ed501781c6eb7e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d2082b0e4e457c2ea1e033d69d8b39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b15906c24c41d13588f3c4b5e19086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7664a5f9b61fd010eda340986ca34b47.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/5ec92843-c143-4317-873a-351deea1a64b.png?resizew=284)
更新时间:2024-01-23 10:54:22
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在矩形ABCD中,E是AB边的中点,沿EC对折矩形ABCD,使B点落在P处,折痕为EC,连接AP并延长AP交CD于F点.
(1)求证:四边形AECF为平行四边形;
(2)若矩形ABCD的边AB=6,BC=4,求
的面积.
(1)求证:四边形AECF为平行四边形;
(2)若矩形ABCD的边AB=6,BC=4,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/568173802070b53ead410b8c5cef8ba3.png)
![](https://img.xkw.com/dksih/QBM/2020/8/12/2526383747555328/2526904686624768/STEM/410918abc7a9441db031cc9ff6379c38.png?resizew=135)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,菱形
的边
在x轴上,点A的坐标为
,点
在反比例函数
的图象上,直线
经过点C,与y轴交于点E,连接
.
(2)求k,b的值;
(3)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff32d26c8d44f5fb4813a19c1030a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21bbe881b4fb9dbb8dafe9bb2be43995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9940526785ca763da2dfa35e77c934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cadd1685d12888b1a68f5c87b3b7f749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee21e656acd8595b26038eb8a78c0be.png)
(2)求k,b的值;
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8b0d7e169313c2a2d5c278cf968b9a.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】某数学“综合与实践”小组的同学把“测量斜拉索顶端到桥面的距离”作为一项课题活动,他们制订了测量方案,并利用课余时间借助该桥斜拉索完成了实地测量.测量结果如下:如图,两侧最长斜拉索
,
相交于点
,分别与桥面交于
,
两点,且点
,
,
在同一竖直平面内.测得
,
,
米,请帮助该小组根据测量数据,求斜拉索顶端点
到
的距离.(参考数据:
,
,
,
,
,
.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fcde7cf117adeeebca1674d3a49352b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2812a4482ffd52ae6bd3b86c70802c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a86bab8d39f6be7c0bc7faa87b0255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4232c0f0a9b087b5eb5f6edd37cd954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c4db3a2c3bd00a4c6dd86fd4c4efb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e7f59ad19a863d7a8f0f9d0d009f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7008f9a34e42c9f276c08330166480d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9839988d7433dee1830a75260f4bb957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/163122bafc2caf074e925d2aca7f2ebe.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
真题
【推荐2】两栋居民楼之间的距离
,楼
和
均为10层,每层楼高为
.上午某时刻,太阳光线
与水平面的夹角为30°,此刻楼
的影子会遮挡到楼
的第几层?(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19b874c039d9e1595f408614a179100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade9841a8e6840efddcfd8620a6fc1fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4083c581c6027c4b2ae7e3b3749f485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a7ff6bb8000946da9599d7d903ac9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a929d0d84e3654f03694adc8d1a326e.png)
![](https://img.xkw.com/dksih/QBM/2019/7/17/2248616361771008/2249737503588352/STEM/2a978bae032344eba66588d6485bc18c.png?resizew=199)
您最近一年使用:0次