dirty的反义词

已知向量a=(sinβ,-2),b=(1,cosβ)互相垂直,其中β∈(0,π/2),sinβ=2√5/,cosβ=√5/5,若5cos(β-a)=3√5cosa,0＜a＜π/2,求cosa的值 一道数学题,初一数学.进来发题目 请求帮我详细解释下面的vfp代码本人没有vfp基础,有段vfp程序看不懂,请求帮忙,要详细的解释哦~ public ss,t,a1,a2,b1,b2,s1,s2,s0,p1,p2,aaaa,bbbb,cccc,dddd,ffff,eeee,lzj aaaa=1 bbbb=2 cccc=3 dddd=4 eeee=5 ffff=6 a1 vfp中这段代码有什么错sele course.coursename as 课程名称,;\x05\x05\x05\x05score.score as 分数,term from score,course;\x05\x05\x05\x05where score.courseid=course.courseid adn;\x05\x05\x05\x05score.studentid=allt(thisform.text1.value) and Michiael asked," Are there any bananas in the kitchen" (变为间接引语) 初中数学：有三张不透明的卡片,除正面写有不同的数字外,其它都相同,将这三张卡片背面朝上洗均匀后,第一次从中随机抽取一张,并把这张卡片上标有的数字记做一次函数表达式中的k,第二次 隆昌一中怎样 隆昌一中怎么样.我是外市高中生.能不能考进隆昌一中.困不困难.我是需要换环境.其他城市读书. 怎么介绍隆昌一中 有没有在隆昌一中读初3的. l隆昌一中隆昌一中教学咋样? Are there any soup in the bowl?这句话哪错了How many peoples are there in your family?这句话又是哪错了 are there any oranges in that bowl? 若函数y=负x^2+2ax+1减a在区间[0,1]上的最大值为2,求a的值?急 May manny fortunes find their way to you . they tried to find as many materials as possilbe为什么选择with which to build their houses?A that they could build their houses B they were able to build housesC with which to build their houses D by which to build their houses How many things can find tind their owners? 校训理解民以为济,和以为生.什么含义? 有两放羊的一个在山上放一个在山下放,一天山上的对山下的说“你给我一只羊我就是你的两倍”,山下的对山上的说“你给我一只羊我们就一样多”有知道的告诉我下 两个人放羊,山上的对山下放羊的说,你给我一个,我比你多一半.山下的对山上放羊的说,你给我一个咱俩一样多.问山上几个羊?山下几个羊? I'm yummy to eat I'm red and round.I grow on the tree.My name begins with the letter as "active".这个英文谜语的答案.它的翻译是：我很好吃.我是红色和圆形的.我长在树上.我的名字的开头字母为“积极”.我是谁? 已知A与B互为相反数,X与Y互为倒数,M的绝对值是5求M*(A+B)+X*Y-2M的值 若a的倒数为-5,则a的相反数是() Matlab求助：怎么把程序中的点连成线m = 4000; g = 10; L = 4; Peak_force_min = inf;Peak_force = 0;for delta = 40:0.5:85for theta = -20:0.5:80c2 = (2.2^2 - 1.2^2)/(cosd(delta - 20) - cosd(delta + 80));c1 = 2.2^2 + c2*cosd(delta +80);a = ((c The child is () his father.A named as B called as C named after 1.9998*9997/9998= It was at the school__was named after a hero__he spent his childhoodA.which,thatB.where,whereC.that,whereD.which,where 一张世界地图上面画了一些线,请问代表什么?如图： He did nothing at home ( ) watched TV all day longA.and B.but C.as D.until 马六甲海峡位于什么航海线 His parents and he walked home quieyly,saying nothing.改为同义句 马六甲海峡往西航行,要通过什么地区?.