首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
已知sin6°=a,sin36°=b,则sin26°=( )
查看本题答案
包含此试题的试卷
教案备课库《》真题及答案
点击查看
你可能感兴趣的试题
已知0<α<0<β<且3sinβ=sin2α+β4tan=1-tan2求α+β的值.
求下列各式的值sin34°sin26°-cos34°cos26°
如图把一张直角三角形卡片ABC放在每格宽度为12mm的横格纸中三个顶点恰好都落在横格线上已知∠BAC
已知0
求值sin6°sin42°cos24°cos12°=.
如图在Rt△ABO中斜边AB=1.若OC∥BA∠AOC=36°则
点B到AO的距离为sin54°
点B到AO的距离为tan36°
点A到OC的距离为
sin54°·
sin36°
点A到OC的距离为
sin54°·
cos36°
sin6°sin42°sin66°sin78°=.
如图在Rt△ABO中斜边AB=1.若OC∥BA∠AOC=36°则
点
到AO的距离为sin54° B. 点B.到AO的距离为tan36°
点A.到OC的距离为sin36°sin54°
点A.到OC的距离为cos36°sin54°
观察①sin210°+cos240°+sin10°cos40°=②sin26°+cos236°+si
已知sinθ+cosθ=则sinπ﹣2θ=.
如图在Rt△ABO中斜边AB=1若OC∥BA∠AOC=36°则
点
到AO的距离为sin54° B. 点B.到AO的距离为tan36°
点A.到OC的距离为sin36°sin54°
点A.到OC的距离为cos36°sin54°
已知函数fx=.若fsinα+sinβ+sin36°﹣1=﹣1fcosα+cosβ+cos36°+1
2
﹣
﹣2
如图在Rt△ABO中斜边AB=1.若OC∥BA∠AOC=36°则
点
到AO的距离为sin54° B.点B.到AO的距离为tan36°
点A.到OC的距离为sin36°sin54°
点A.到OC的距离为cos36°sin54°
已知u=36sinωt+π/4伏i=6sinωt+π/6安求μ和i的初相位和u和i的相位差并指出哪个
如图为了测量山顶铁塔AE的高小明在27m高的楼CD底部D.测得塔顶A.的仰角为45°在楼顶C.测得塔
已知sin6°=asin36°=b则sin26°=
a
2
2a
b
2
b
如图在Rt△ABO中斜边AB=1.若OC∥BA∠AOC=36°则
点B到AO的距离为sin54°
点B到AO的距离为tan36°
点A到OC的距离为sin36°sin54°
点A到OC的距离为cos36°sin54°
已知sin+sinα=--<α<0则cosα=__________.
a=cos6°-sin6°b=2sin13°cos13°c=则
a
a
a>b>c
b
如图在Rt△ABO中斜边AB=1.若OC∥BA∠AOC=36°则
点B到AO的距离为sin54°
点B到AO的距离为tan36°
点A到OC的距离为sin36°sin54°
点A到OC的距离为cos36°sin54°
热门试题
更多
﹣Myalarmclockdoesn'tworknow.Couldyouhelpmefixit? . A.Nohurry B.I'msorrytohearthat C.Noproblem D.Idon'tcare
如果他邀请我参加他的生日聚会我会很高兴. Iwillbeveryhappytohisbirthdayparty.
Everyoneshouldapartinmakingourcitymorebeautiful. A.put B.take C.play D.help
将所给单词连成正确的句子 satdownDavidhisopenedandbook .
将所给单词连成正确的句子 bemoretreeswillpollutiontherelessand .
WiththehelpofmissLiIspeakEnglishinmyclass. A.better B.thebest C.well D.muchbetter
﹣﹣﹣SarahdoyouknowZhongNanshan? ﹣﹣﹣Ofcourse!He'sreallyadoctor. A.succeed B.success C.successful D.successfully
﹣Myparentsalwayswantmetodohomeworkafterschool! ﹣That'stoobad!Youmusthavetimetorelax! A.moreless B.lessmore C.fewerless D.morefewer
﹣doyougotomoviesMary? ﹣Hardlyever!Iamtoobusywithmyschoolwork. A.How B.When C.Howoften D.Howmany
将所给单词连成正确的句子 robotwillhavepeople ?
﹣NextMondayisNewYear.CanyoucometoNewYear'sparty? ﹣Ican'twait! A.SorryIcan't. B.SureI'dloveto C.Iamafraidnot D.That'snottoobad.
ShealwaysdoesverywellintheEnglishexams.ButshecanunderstandEnglishradioprograms. A.always B.hardly C.already D.easily
﹣HowdoyoureadEnglishnewspapers? ﹣IreadChinaDailyeveryday. A.long B.often C.many D.much
﹣YourgrandfatheroftendoesTaiChiinthepark. ﹣Yeahbadweatherstopshim. A.when B.since C.unless D.because
﹣Whatwillyoudoifyouhavetoaninvitationtoaparty? ﹣Ithinklwillsaysorryandtellthereasonatthesametime. A.delete B.make C.refuse D.believe
﹣WhyareyouinsuchahurryJohn? ﹣ThereabasketballmatchbetweenClassThreeandourclassintenminutes. A.isgoingtobe B.isgoingtohave C.willhave D.willhold
﹣﹣﹣Thisisquiteeducationalbook. ﹣﹣﹣Yes.Itcanalsohelpyougetintouniversity. A.an/ B.a/ C.aa D.anan
﹣WhatcanIdofortheparty? ﹣Youcanwithanyofthepartypreparations. A.careabout B.thinkof C.helpout D.lookafter
﹣Ifpeopledrivecarstherewillbeairpollution. ﹣Yesyou'reright. A.lessfewer B.lessless C.fewerfewer D.fewerless
﹣﹣﹣Itissaidthattheresometalksbyfamousscientiststomorrowafternoon. ﹣﹣﹣Really?That'sgreat! A.willhave B.willbe C.isgoingtobe D.aregoingtohave
﹣Whatcanyouexpectthispassage? ﹣It'sveryimportanttodecidewhatyouwillbeinthefuture. A.learningfrom B.learnfrom C.tolearnfrom D.learnedfrom
根据汉语提示用句末括号内的英语单词完成句子. 我们这几天正在为期末考试做准备.prepare Wethefinalexamthesedays.
ThereanEnglishspeechcontestthisafternoon. A.isgoingtobe B.aregoingtohave C.isgoingtohave D.aregoingtobe
﹣﹣﹣Willyoukeepittoifyouhaveaproblem? ﹣﹣﹣Yes.I'lljustkeepitto. A.yourselvesourselves B.yourselfmyself C.yourselvesmyself D.yourselfourselves
她好期待再次见到她的笔友. Shereallyherpenpalagain.
Friendshipisveryimportantandlifefriendscanbeveryboring. A.for B.in C.from D.without
根据汉语提示用句末括号内的英语单词完成句子. 我们应该感恩我们的父母他们无微不至照顾我们.look Weshouldsaythankstoourparentsbecausetheyalwaysussowell.
Thereare_____doctorsinthehospital.Manyofthemarewomendoctors. A.twohundred B.twohundreds C.twohundredsof D.hundredof
根据汉语提示用句末括号内的英语单词完成句子. 她昨天决定参加英语俱乐部.decide ShejointheEnglishclubyesterday
昨天的意外与他毫无关系 Theaccidentyesterdayhadhim.
热门题库
更多
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库
教案备课库