幼儿园作业春游作文

1.Teenagers ______their health because they play computer games too much.A.have damaged B.are damaging C.damaged D.will damage2.The telephone_____,but by the time I got indoors,it stopped.A.had rung B.was ringing C.rings D.has rung3.Have you got any 1.Never before have I heard____beautiful music played by____common an instrument.A.such;so B.so;so C.such;such D.so;such2.The information on the internet gets around much more rapidly then___in the newspaper.A.it B.those C.one D.that那其他选项 求sin18°=?sin3°=?通过计算求其精确值,不要近似值... sin3π sin18π等于多少啊 求sin18度的值（要写详细过程!）sin18度的值必须是准确值 求sin18的精确值(要求有详细过程)光有答案没用 请教2cos18°×cos18°(sin18°-1)+cos36°sin18°的值, 简算分数题7分之4×4分之3+0.75×7分之3—75%（8分之7+16分之5)÷（14分之9+7分之5）30分之17+（10分之7—2分之1）÷8分之3 分数题简算1/1*2 + 1/2*3 + 1/3*4 + 1/4*5 + 1/5*6 + 1/7*8 简便计算这道题 这两题分数怎么简算4/7÷ 0.5+3/4×2 （5/6+1/3-5/9）×8怎么简算, 初三英语（English） 写理由He teachers English in ____ No.10 Middle SchoolA.the B./ C.a 初三英语English 写理由填空（awake,wake）--Has he _____ up yetWe have been kept ____ all night by the nose 英语语法 写理由 English1.____ children all had a good time on Children's DayA.the B.a C./ 给我写一下英语作文 题目English is my future 马上要了 求你们了 150 词左右 sin6分之π+sin3分之π+sin2分之π+sin3分之2π+sin6分之5π+sinπ的值 找到sinθ,cosθ,sin2θ,cos2θ的值怎么找sin3θ?ABC为直角三角形,角BEA=90°,AE=h,AB=a,角ABE=θ,C,D为BE上的点,使角ACE=2θ,角ADE=3θ.如是者能找到sinθ,cosθ,sin2θ,cos2θ的值,然后怎么找sin3θ? 求cosα+cos2α+cos3α+.+cosnα的值 sinα+sin2α+sin3α+.+sinNα 2(a^2+b^2)(a+b)^2-(a^2-b^2)^2 因式分解该题,请写出过程, ,（最好写纸上拍下来,谢谢）9题的（1）,10题的（1）,初二数学因式分解 ,（最好写纸上拍下来,谢谢）9题的（1）,10题的（1）,（2）,（3） 因式分解,二十一题,二十二题. 第十题 因式分解 数学归纳法证明​ sinθ+sin2θ+sin3θ+...+sin(nθ)=数学归纳法证明:sinθ+sin2θ+sin3θ+...+sin(nθ)= { sin[(1/2)(n+1)θ] * sin[(1/2)nθ] } / sin[(1/2)θ] The car ______ I came to work this morning broke down on the way.That’s why I was lateA.on which B.by which C.by that D.in which 帮忙解释这道英语题?高中的``15. Don’t go in, this is the shop _____ we have just been _____. A. /, to B. that, / C. where, to D. which, there I ______(not know) you _______(be)so busy in the past few years.怎么填 这题怎么写?(能简算的要简算) 怎么写,求简算 计算下面各题（能简算的要简算）!怎么写 已知sinα+cosα=3/4那么sin3α-cos3α的值为 已知cos3θ/cosθ=1/3,求sin3θ/sinθ的值 已知sinα-cosα=1/3,求sin3α+cos3α的值 已知sinα·cosα=—12/25且3П/4＜П求⑴tanП的值.⑵求sin3α—cos3α的值.快回答我很急!我要详细过程