硫酸铜饱和溶液浓度

解直角三角形 在rt三角形abc中, 角c=90度 若sina =2分之根号2则cosb的值为 a.2分之一 b.二分之根号二 在Rt△ABC中,∠C=90°,若sinA=根号2/2,则sinB= 英语的一道首字母填空 请各位好心人尽快回答,在周日前哦.谢谢啦John,Kate’s brother, moved to a new house last month. Kate wanted very uch to visit John. That morning Kate d____ for a very long time to visit him. But she coul 初一英语哈、首字母填空哈、好心人……帮帮忙嘞①We all know the Yellow Mountain is o_____ of the most famous mountains in China.②In the e_____ morning when the sun rise,the sky looks b______.the sky looks b______.到底是啥 帮个忙,首字母填空1.Team sports r______ two separate teams.2.Teams sports are sometimes c______ competitive sports. 首字母填空,帮个忙啊 ,the first woman in space was a_____ a Russian ,Valentina Tereshkova.In June 1963 ,she t___ nearly three days to go round the earth 48 times.she landed on earth after travelling nearly two m____ kilometers.The first man t 一个英语首字母填空,请各位帮个忙,I often send f_________ to my mother on her birthday. 几道英语首字母填空,会的来帮个忙!1:Why not take off your coat It's much w____ here.2:Can the girl d____ herself?Yes,she can.She is old enough to look after herself.3:l'm sorry l can not go with you because l am b____ doing my homework. 在△ABC中,若|sinA-2分之根号3|+(1-tanB)²=0,求角C的度数A.45° B.60° C.75° D.105° 在△ABC,∠A∠B都是锐角,sinA=1/2,tanB=根号3,AB=10,求△ABC的面积 △ABC中,sinA=根号3/2,tanB=1,则∠C= 初二英语首字母填空帮个忙 在直角三角形∠ABC中,∠C=90度,AC=8,∠CAB的平分线AD=3分之16根号3,求∠B的读数及边BC AB的长快 先化简再求值x-y分之1-x+y分之1除以x²-y²分之xy²,其中x=√2+1,y=√2-1 在Rt三角形ABC中,角C=90度,有下列条件解直角三角形 （1）B=8..角A的平分线AD=3分之16根号3求A、c的长（2）AD是BC边上的中线,AC=3倍的根号3,角ADC=60°,求三角形ABC的面积 先化简再求值x-y分之1-x+y分之1除以x²-y²分之xy²,其中x=√2+1,y=√2-1 化简求值：（负三分之一 xy）²[xy（2x-y）-2x（xy-y²）],其中x=-一又二分之一,y=-2 英语作文 请帮个忙 英语作文 我生命中最重要的一天 许多年前,我和同学们在老师的带领下去爬山.到了山脚下,我们开始爬山.但是很爬山很艰难,更让我体会到了友谊的可贵.记得在一险处我差 补全对话,好心人帮个忙哈..A; I don’t know.You’d better ask that man ovre.B；Thank you ___ ___ ____这3个悾怎么填?A; I don’t know.You’d better ask that man ovre.B；Thank you ___ ___ ____ 这3个悾怎么填?是一段关于问 英语作文~帮个忙!近年来,传染性疾病不断发生,威胁人类的健康.为了使同学们少受疾病的危害,班主任正在举办“防止传染性疾病”的主题班会,请你就这一问题,写一篇发言稿,谈谈自己的想法, 英语作文啊.帮个忙Imagine you are a tourist guide.Write a schedule for this weekend.Answer the questions below in your schedule.Where are you going?What are you doing there?What shouldtourists take with them?Where are you leaving from?When are 先化简,再求值:x-3分之2x+6÷9-x²分之x²+6x+9×x-2分之x+2,其中x=-2分之3 用所给词的适当形式填空　　1.Tom ______ (be) ill last week,he ______ (be) much better now.　　2.Jimmy and his sister _______ (be) here several days ago.They ________ (leave) for Beijing yesterday.　　3.He ___________ (have ) a bath wh The building in front of our school caught fire yesterday.(改为否定句）The building in front of our school _____ fire yesterday.People can use clay to make plates.(改为被动语态）Clay can _____ _____ to make plates. 根据中文名取英文名 女,陈冬灵……不要抄的,要谐音!我不要抄的，我只要谐音的！ 帮我取个英文名字,谢谢好心人我的名字叫(吕亚男)是个女孩子.活泼开朗,时尚路线.最好和我的名字符合,把含义写出来,谢谢了! 我叫李冬冬,女,实在想出来有什么单词和我的名字谐音,所以请高人帮我取个好听的英文名字, 好心人给我取个英文名我是个女孩 名字叫黄洛羽想大家帮忙给取个英文名.要女孩子点的名字,Lory虽然很适合我名字,可是太男人了 受不了罗瑞.要是实在没有适合我中文名字发音的英文名有其 已知xy都是有理数且根号y=根号二分之一x-1+根号1-二分之一x+3求y的x方的平方根 已知x,y都是有理数,且y=根号x-3加上根号3-x+3,求x,y的算术平方根 找规律 3.2、16、80、（ ）、（ ） 3.2,16,80,( ),( ).找规律填数,( )里填什么.