国家跳台滑雪中心位于北京2022年冬奥会张家口赛区古杨树场馆群,是我国首座符合国际标准的冬奥会跳台滑雪场地.外观结构与中国传统吉祥物“如意”的S形曲线完美融合,因此,被形象地称为“雪如意”,在它的身上,体现了现代建筑与自然山水、历史文化的交相辉映,在这里举行的跳台滑雪分大跳台和标准台,大跳台A点出发区海拔1771米,着陆点U点海拔1635米,大跳台与标准台水平相距
米,大跳台坡角
,标准台坡角
.求大跳台与标准台出发点落差
是多少?(参考数据:
,
,
;
,
,
,结果保留整数.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d194ea0173c3e096ffb9146a85743d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f766494b4aa7cab3c371165a9e914239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64fb264d5fed7c2293dc568d3fb6e01e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27acebe4b2151ece74173c272a2fee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cb722c9b6f930fa227e62da71c1a77f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/097b2e089c432375c4e5280061809b7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c2d2db1fa8a6c703c6edecfa038d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7e8186509333d743c128cec63d9994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59edc04822a09c8aacb12f7641c36376.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/20/9ea7a1ee-d4a7-4f18-a8a5-b6b51a1f4f02.jpg?resizew=409)
更新时间:2023-10-07 19:23:38
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在
中,
,高
,矩形
的一边
在
边上,E、F分别在
上,
交
于点H.设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/30802adb-c384-4722-adcf-8a203004d3c7.png?resizew=139)
(1)当四边形
为正方形时,求x的值;
(2)求矩形
的最大面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8552ad9af3f75f11ec1d2aae32147fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f6927cc2a930203ac34366383e76ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d54431bbb28ebd98db5c1dc6083a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0124d4c22e17a6b719cf2d0f0b305e4e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/30802adb-c384-4722-adcf-8a203004d3c7.png?resizew=139)
(1)当四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8552ad9af3f75f11ec1d2aae32147fc9.png)
(2)求矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8552ad9af3f75f11ec1d2aae32147fc9.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,
是
的直径,
平分
,点
,
在
上,过点
作
,交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896444928491520/2952914141020160/STEM/d96c5afe-465b-4ad6-9e7b-f36612488c1b.png?resizew=152)
(1)求证:
是
的切线;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896444928491520/2952914141020160/STEM/d96c5afe-465b-4ad6-9e7b-f36612488c1b.png?resizew=152)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0761165f1176f3a5fe4f7b052832316d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a19338598965bb3856cdd0236bbf694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】滑雪天才少女谷爱凌于2021年1月首次参加世界极限运动会,取得2金1铜共3枚奖牌的优异成绩,成为中国首位在世界极限运动会夺金的运动员,自此引起了全民冰雪运动的热潮.图1、图2分别是一名滑雪运动员在滑雪过程中某一时刻的实物图与示意图,已知运动员的小腿
与斜坡
垂直,大腿
与斜坡
平行,G为头部,假设G,E,D三点共线且头部到斜坡的距离
为
,上身与大腿夹角
,膝盖与滑雪板后端的距离
为
,
.
的长度;
(2)求此运动员的身高(参考数据:
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f887360a533f0a25b0b34fb11f0a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e79003fcfc2255bb61a80d5633e15d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffac67bda69a5c22037e3b8ce0fd3c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b514ca29d7d7df3ccc349e7e93e5fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21716b6479f11b10fab843eddd2aa407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
(2)求此运动员的身高(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76fe9cc87f8e8389c94efa7e7caab2a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad548d3bb499aab6d0baf4032be99bfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7664a5f9b61fd010eda340986ca34b47.png)
您最近一年使用:0次
解答题-应用题
|
适中
(0.65)
名校
【推荐2】如图,为了测量小河对岸一座小山
的高度,某测绘小组先在斜坡上的
处,测得小山顶端
的仰角为
,且
离地面的高度
.斜坡
的坡度
(坡面的垂直高度
和水平宽度
的比叫做坡度(或叫做坡比)用字母
表示),然后在
处测得小山顶端
的仰角是
,点
在同一水平线上.
,
;
(2)求点
到点
的距离(结果保留根号);
(3)求小山
的高(结果保留根号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3ec68a9810c8b898cdbbb7a273b057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcca115f36666388c3afedb11b4db25d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9017f10a44a1a9433ac0b39945137507.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.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/e13b121a371524ec93dec325c5b0fe69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cbafd6378e70bc9b2df52ed82f6416e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4db07c6ce6c8b0e96a3470c6a3491334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c3c112368d374afe3c2f8a4a1ce29c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32217457c4e96e2ef155cf15c1b65d97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5022abc6afd4deff13845419fa38312e.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)求小山
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次