digital+sin
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cd-rom和dvd的英文释义
CD-ROM \/ˌsiː diː ˈrɔm US -ˈrɑːm\/ n [U and C]compact disc read-only memory a CD on which large quantities of information can be stored to be used by a computer CD-ROM是只读光盘是一种能够存储大量数据的外部存储媒体,一张压缩...
情书第2季第22期裴涩琪跳的歌曲
http:\/\/vip.blueshow.net\/allBlue\/ ... igital%20Orgasm.mp3 3.Doo Be Doo.mp3 http:\/\/vip.blueshow.net\/allBlue\/music\/Doo%20Be%20Doo.mp3 参考资料:http:\/\/zhidao.baidu.com\/question\/6943926.html?si=1
江源区小儿回答: Zoey Kush
丘冰13193512991问: 杜比数字+ 是什么意思? - ?
江源区小儿回答: 也就是DOLBY Digital Plus.是一款专为不断演变的媒体而设计的高级环绕声音频编解码器.从家庭影院和PC到移动电话和在线播放,杜比数字+技术对各种高保真音频进行了定义.您将从各种娱乐活动中获得令人陶醉的影院体验.
丘冰13193512991问: 化简√1+sin2 - √1 - sin2等于 - ?
江源区小儿回答:[答案] 1+sin2=sin²1+cos²1+2sin1cos1=(sin1+cos1)² 1- sin2=sin²1+cos²1-2sin1cos1=(sin1-cos1)² ∵ π/4
丘冰13193512991问: (cosπ/8+sinπ/8)(cos^3π/8 - sin^3π/8) - ?
江源区小儿回答:[答案] 是要化简吗? (cosπ/8+sinπ/8)(cos³3π/8-sin³3π/8) =(cosπ/8+sinπ/8)(cosπ/8-sinπ/8)(cos²3π/8+cos3π/8sin3π/8+sin²3π/8) =(cos²π/8-sin²π/8)(1+1/2sin3π/4) =cosπ/4 * (1+1/2sin3π/4) (老实说我觉得你应该知道cosπ/4和sin3π/4的值了……) =cos...
丘冰13193512991问: 2cosθ +sinθ=?最大值 - ?
江源区小儿回答:[答案] 由sinθ+2cosθ=0,得tanθ=-2 .1+cos^2θ分之cos2θ-sin2θ=2倍的cosθ的平方+sinθ的平方分之cosθ的平方-sinθ的平方-2倍的sinθcosθ=2+tanθ的平方分之1-tanθ的平方-2倍的tanθ=1/6
丘冰13193512991问: 怎么解方程cos(x)+sin(x)=0 - ?
江源区小儿回答:[答案] cos(x)=-sin(x),1=-sin(x)/cos(x)=-tan(x)=1.x=-3/2∏+360°
丘冰13193512991问: sin34°cos26°+sin56°cos64°等于多少. - ?
江源区小儿回答:[答案] sin34°cos26°+sin56°cos64° =sin34°cos26°+cos34°sin26° =sin(34°+26°) =sin60°=√3/2
丘冰13193512991问: 化简1+sin(a - 2π)*sin(π+a) - 2cos平方( - a) - ?
江源区小儿回答:[答案] 1+sin(a-2π)*sin(π+a)-2cos²(-a) =1+sina(-sina)-2cos²a =1-sin²a-2cos²a =cos²a-2cos²a =-cos²a
丘冰13193512991问: sin164+sin224+sin254sin314过程 - ?
江源区小儿回答:[答案] 错了吧,前面是sin164sin224 原式=sin(180-16)sin(180+44)+sin(270-16)sin(270+44) =sin16(-sin44)+(-cos16)(-cos44) =cos16cos44-sin16sin44 =cos(44+16) =cos60 =1/2
丘冰13193512991问: sin10°+2sin10°sin20°sin40°=______. - ?
江源区小儿回答:[答案] 原式=sin10°+2sin10°•[cos(20°−40°)2-cos(20°+40°)2-]=sin10°+sin10°•(cos20°-cos60°)=sin10°-12sin10°+sin10°cos20°=12sin10°+sin10°cos20°=12[sin(10°-20°)+sin(10°+20°)]+12sin10...