已知tanα/2=根号3/3，求sin2α+（cosα/2)2

I have three pens in the bag （同义句）英语 Back in the Saddle (Remastered) 歌词 Back In The Saddle (Live) 歌词 this volunteer work takes each of them several hours a week(改为同义句)she ____ several hours a week ____ this volunteer work 写出同义句：This volunteer work takes thern several hours a week. Just want to be with you,let you give me happiness译成中文什么意思 人类第一次发射载人飞船成功是什么时候? 竹子头下面一个无字 怎么念 she lied to him,what she said was ___ 1 false 2 lie 选择哪一个及分别说出每一个分别为什么对与错 "Lie down!"the boy said to his dog.改为同义句 黑龙江省属于我国( )丘陵地区 黑龙江省鸡西市是属于丘陵啊还是什么的? 修改句子.（1）I don't know how big is Beijing.(2)Beijing is got lots of animals.(3)My hometown is in the Beijing . What the difference between "puzzle" and "confuse"Special thanks for all responder. confuse 与confound的区别 帮我翻译下,You should have a mind of your 求:You should have a mind of your own 黄山为于我国什么省,什么丘陵地区 黄山处于什么省,什么丘陵 求音乐：i want happiness,i speekhappiness I want happiness ,这首歌的名字是什么 I want happiness is looked after by you求意思I want happiness is looked after by 网上翻译的就不要来了！ 英语翻译那 "我想要幸福 也给你幸福"怎么说按 翻译knock over 东南丘陵属于第几级阶梯如题 搜集结尾为er的单词要求：五个单词字母数为7,包括er5个哦(⊙o⊙) 以er结尾的词有什么意思或者是规律吗? 上面一个竹子头下面了念什么 上面一个竹子头.下面一个二,念什么? knock out意思 knock knock us out的意思