求化简:[Sin(1440+x)*cos(x-1080)]/[Cos(-108-x)*sin(-x-180)]谢谢各位大侠了啊

求化简:[Sin(1440+x)*cos(x-1080)]/[Cos(-108-x)*sin(-x-180)]谢谢各位大侠了啊 [Sin(1440+x)*cos(x-1080)]/[Cos(-108-x)*sin(-x-180)] sin（sin（sin（sin（x）=cos（cos（cos（cos（x）,X等于多少? cos x/sin x+sin x/(1+cos x) 化简. cos x /sin x= 求化简(sinx+tanx)/cos^2x+sin^2x+cosx sin(x+105°)cos(x-15°)-cos(x+105°)sin求化简 sin(x+105°)cos(x-15°)-cos(x+105°)sin(x-15°) 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 (x*sin x*cos x)的导数 参数方程x=cos(sin+cos)y=sin（cos+sin）化为普通方程 化简sin(x)(cos(x)+cos(3x)+cos(5x)+cos(7x)) 2cos x (sin x -cos x)+1 sin(360--x)cos(180+x)cos(90+x) y=2cos x (sin x+cos x) 化简sin(x)cos(x)cos(2x) 化简sin(x)cos(x)cos(2x)