来自胡继先的问题
小明从8m长的笔直滑梯自上而下滑至地面,已知滑梯的倾斜角为40°,求滑梯的高度.（精确到0.1m)
小明从8m长的笔直滑梯自上而下滑至地面,已知滑梯的倾斜角为40°,求滑梯的高度.（精确到0.1m)
1回答
2020-12-20 23:36
我要回答
请先登录
贾允毅
设滑梯的高度为xm
则x/8=sin40°
x=sin40°*8
查表得
x=0.64*8
x=5.12
2020-12-20 23:40:31
最新问答
推荐文章
猜你喜欢
附近的人在看
推荐阅读
拓展阅读
- MissLiusaid______shewouldleavethemessageontheheadmaster”sdesk.填什么?
- sheliedtohim.whatshesaidwasfalse.在这两句话中,WHAT在句之中起什么作用啊.如何翻译啊.
- 【shesaidtous,"i'llcomeheretomorrow改为间接引语】
- 英语填空题shesaidthatshedidnotlikeherpresentflatand_____(try)tofindanother.用括号里单词的正确时态填空.为什么不能用tried?wastrying.并把这个句子翻译了.
- 请用所给的英语单词和词组组合成句子.don'tcananotherIhamburgerslikewetoresaurantgo______________________________________________
- shesaid:"i'mgoingtoseeafilm."怎么改成间接引语
- 【儿童哲学智慧书：生活,是什么?】
- 【流沙河的诗---理想中的一句话的理解“世界上总有人抛弃了理想,理想却从来不抛弃任何人.”这句话,你是怎样理解的?限30分钟!】
- ____whoshewas,shesaidshewasMr.Johnson'sfriendAaskingBaskedCtoaskDwhenasking解析下
- 感恩的心是诗歌吗?
- shesaidthatshelikedenglishverymuch.是什么从句?kuaikuai
- 大家认为做sat的阅读时是先读文章好还是先看问题好啊?如果是问第一段与第二段联系的问题，却没有时间看完文章的话，有没有什么技巧呢？
- 几个英语选择题,知道的说下.1.theoldbuidingshadtobe____tomakewayforanewhousingproject.(A).pulledin(B).pulledout(C)pulleddown(D).putdown2.Shesaidshewasbusy,____wasalie(A)which(B)this(C)it(D)that3.weekslaterhehads
- 【Shesaidthatshe_____toParis.(notbe)Ahadn'tbeenBhadneverbeen请问哪个是真确的,还是2个都是正确,如果有一个错误的,请讲以下错在哪里,】
- 英语句型转化shesaid"ireadthebookwhileiwaswaitingforabus"转间接引语
- Shesaid,"Imustgohome."变为间接引语时,must需要变吗?像Shesaid,"Icanswim."就变为Shesaidthatshecouldswim.把can变为了could
- Shesaidthatshewoulddo_______shecould__________herdaughterlaugh.A.whatmakeB.thatmakeC.whattomakeD.thattomake
- 4.＿＿＿＿whoshewas,shesaidshewasMr.Johnson'sfriend.A.AskingB.AskedC.TobeaskedD.Whenasking这道题选B为什么不选c啊?解析是这样给的：分词短语作状语,因为ask与句子的主语（she）之间
- 21.Mymotheroftensaidthatshewouldneverforgetthefouryears___shespentinthecountrywithmygrandparents.A.inwhichB.onwhichC.whenD.that22.Itissaidthatthemathteacherseems_______towardsbrightstudents.A.partialB.beneficialC.prefer
- 【Shesaid,”Mary,Ihavefinishedmywork.”(改为间接引语)ShetoldMarythatshehadfinishedherwork.不知这样是否也可以：ShesaidtoMarythatshehadfinishedherwork.、、、?】
- 【英语翻译Oneday,MrBlackwentintoarestaurant.Heputhiscoatonachairnearthedoor.Therewasnothinginthepocketsofhiscoat.Afterhehadhismeal,hewenttotakehiscoatback.Hefoundtherewasmuchmoneyinoneofhispockets.“Whos】
- 【为什么红茶要翻译成blacktea】
- Shesaid__shedidn'tliketheuniform
- 【Afterhearingthesong,shesaidwhatawonderfulsongshe_.AheardBhadheardChasheardDwouldheard】
- 英语翻译Itookmybabyonasaturdaybangboyisthatgirlwithyouyeswe'reoneandthesameNowibelieveinmiraclesandamiraclehashappenedtonightbutifyou'rethinkin'aboutmybabyitdon'tmatterifyou'reblackorwhitetheyprintm
- Katesaid“Hello”toMrPatelassheentered.Shepickedupawirebasketandwalkedtowardsthebackofthestore1thericewaskept.Theroomwasquitelargeanddividedbythreelongaisles(过道)withrowsofshelvesfullof2&sh
- she_thatshe_herbesttohelpthemthenextterm.A.said,willdoB.said...woulddo怎么填啊
- 【选填notallow和use的适当形式Shesaidshe_____tothelifeinShanghaiTheprivatecars_____inBeijing.】
- Janesaidshe__sendinge-mails___letters.Apreferred,towritingBpreferred,towriteCprefers,towritingDprefers,towrite
- 【什么是多音节词,双音节词和单音节词】