sin(180+x)+cos(-x)/sin(180-x)+cos(360+x)=2 求tan(x+45)
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/20 20:29:39
xPN@Y:q#EFR`,J$1&>@(te/8- MLdιܹ3G96"plXd"0,to*e[.ؔt ݴB({oNRAHb$ J%Yɀ|
N$Gx)\R3?fj`1.,Q/2]S/բ"[Z[f-*5ohCGzsvHHky4͡Uŕ-+u7VQúҍau|_5;f]#3)诏
sin(180+x)+cos(-x)/sin(180-x)+cos(360+x)=2 求tan(x+45)
sin(180+x)+cos(-x)/sin(180-x)+cos(360+x)=2 求tan(x+45)
sin(180+x)+cos(-x)/sin(180-x)+cos(360+x)=2 求tan(x+45)
sin(180+x)+cos(-x)/sin(180-x)+cos(360+x)
=[-sinx+cosx]/[sinx+cosx]
=2
-sinx+cosx=2sinx+2cosx
tanx=-1/3
tan(x+45)=(tanx+1)/(1-tanx)=[2/3]/(4/3)=1/2
hehe,zen me lao you ren wen zhe yang de wen ti .百度或者谷歌搜索《《黑皇帝安全网》》。里面的技术文章可以帮助到你……。上面有很多这方面的资料可以去查询,也能下载教程软件,————作者hackemperor
sin(360--x)cos(180+x)cos(90+x)
[Sin(1440+x)*cos(x-1080)]/[Cos(-108-x)*sin(-x-180)]
cos x/sin x+sin x/(1+cos x) 化简.
sin(sin(sin(sin(x)=cos(cos(cos(cos(x),X等于多少?
cos x /sin x=
S=(cos^2 x+cos^4 x+.+cos^2n x)+(sin^2x+sin^4 x+.+sin^2n x)数列求和题!答案是(cos^4 x+sin^4 x-cos^2n+4 x-sin^2n+4 x)/sin^2 x.cos^2 x
sin(180+x)+cos(-x)/sin(180-x)+cos(360+x)=2 求tan(x+45)
(x*sin x*cos x)的导数
cos(sin x)怎么解
已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x
化简(sin x+cos x-1)(sin x-cos x+1)/sin 2x
化简cos(180°+x)*sin(x+360°)/[sin(-x-180°)*cos(-180°-x)]
化简:{cos(180*0+x)sin(x+360*0)}/sin(-x-180*0)cos(-180*0-x)
求化简:[Sin(1440+x)*cos(x-1080)]/[Cos(-108-x)*sin(-x-180)]谢谢各位大侠了啊
已知Sin x+Sin y=1/2,Cos x+Cos y=根号3/3,求S求Sin(x-y)/2
化简sin(x)(cos(x)+cos(3x)+cos(5x)+cos(7x))
matlab如何绘制参数函数的图像?x=cos(s)*cos(t);y=cos(s)*sin(t);z=sin(s);其中0
2cos x (sin x -cos x)+1