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三角函数 求角f(x)=sin(2x+π／6)+1／2,f(A)=(1+√3)／2,求角A的大小.为什么只能有一个答案? 同角的三角函数sina=m |m|≤1 求tana已知cosa≠0,且cosa≠±1,用cosa表示其他三角函数 I am glad (meet)you here.Our teacher (make) us (read)the sentences loudly.would you like something(eat). 1.请问汽车三角臂的作用是什么,三角臂的胶套有轻微裂纹现象,是否必须换三角臂?我的车型：大众 宝来变速器：手动排量：1.6升行驶里程：44000公里购买时间：2008年3月 请问汽车三角臂的作用是什么,三角臂的胶套有轻微裂纹现象,是否必须换三角臂?我的是奇瑞A5.5万公里了,走烂路时前轮异响,两年了,不知道是不是三角臂坏了,老是跑方向,向左跑.四轮定位做好 汽车三角臂怎么判断变形没有我的车在水泥地擦了 与家庭有关的诗词名句 our monitor is ___in all kinds of sports,so we should learn from him.(act) 如何提高英语单选 已知向量a=(-sint,cost),向量b=(1,-t),向量a⊥向量b,则(1+t^2)(1+cos2t)-2=已知向量a=(-sint,cost),向量b=(1,-t),向量a⊥向量b,则(1+t^2)(1+cos2t)-2= 已知a向量=（-sint,cost）,向量b=（1,-t）,向量a垂直向量b,则（1+t^2）*(1+cos2t)-2的值为 Do you want to eat another moon cake?（改为征求意见的句子）一共有五个空 谁会? 英释汉：I am hungry,I want a piece of cake. My Heart Will Go On (Love Theme from the movie Titanic) 歌词 In 1997,sang My Heart Will Go On for the film Titanic是什么意思 he asked me,''what is your drother doing ''改为宾语从句 lt took me about two hours to finish it.改 遇到个问题,我需要在名称与B3(名称为文本格式,其中之一为030220)相同的另一个工作表中,寻找与E3同行的数字,写的公式发现不对,具体问题应该出在indirect后面的内容,望指教!F3=vlookup(E3,'indirect(" the song of the birds这句话出自课文,为什么song是单数 Can you hear the songs ( ) the birds?A .about B.to C.of the frresh air and sweet song of the birds.改错 song 改成了songs.但sweet 前不缺少个the吗?金山词霸上的例句 3.the sweet song of the lark; the sweet face of a child.云雀甜美的歌声；孩子甜美的面容。它都没用songs啊 still the song of birds这个短语怎么译好?感觉应该译起来很浪漫的样子! Although mockingbirds superbly mimic the songs and calls of many birds, they can nonetheless be quickly identified as mockingbirds by certain aural clues.句中as mockingbirds 是什么意思啊,全句怎么翻译!?~?同时提问，这个nonetheless To be kind翻译中文 这里的人口减少到……的翻译,用reduce to 还是be reduced to? We know "the value of it is seldom known it is lost " ow i want to cry… 福如东海,寿比南山. 关于福如东海寿比南山的反义词的诗句 i looked ()the direction of the cry.to,in应该填哪个?求讲解 It's common scene now in Chile that families cry helplessly__is left of their homes.A.thatB.whichC.thereD.whatIt's common scene now in Chile that families cry helplessly over__is left of their homes.题目应该是这个 after my visit in June I presuaded our QAto use the lots NO.33 order, 3.You can ___(find) the photo on the computer 4.Jack is ___(thin) than tom "reference"什么意思