怎么化简cos(2x-π/3)-sin(2x-π/3),

2cos(x/2)(3^(1/2)sin(x/2)-cos(x/2))怎么化简? 函数fx=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)怎么化简? 怎么化简cos(2x-π/3)-sin(2x-π/3), cos^2x-sin^2x 怎么化简 sin cos之间怎么转换?sin(π/3-2X）等于cos多少? 2sin(π-3)cos(π-3)怎么化简 2cos(2x+π/3)怎么变成sin 帮帮化简sin^4x-cos^4x(sin^2x+cos^2x )(sin^2x-cos^2x)怎么得sin^2x-cos^2x?麻烦 f(x)=[1+sin(2x+π/3)]方+cos方(2x+3)-2怎么化简详细 y'=4sin(2x+π/3)cos(2x+π/3) 化简 y'=2sin(4x+2π/3).怎么化简的? sin^2x+2sinx+3cos^2x怎么化简 怎么化简√3cos^x+sinxcosx-√3/2为sin(2x+ π 3 ) 怎么化简sin（2π+a)cos(π-a)cos(π/2-a）cos(7π/2-a)/cos(π-a)sin(3π-a)sin(-π+a)sin(5π/2+π） （sinθcosπ/3）-（cosθsinπ/3）怎么化简得sin(θ-π/3) 如何化简sin(x-π/2） cos（x+π/2） cos（x+3π/2) Sin(x+π/3)+2Sin(x-π/3)-根号3乘以Cos(2π/3 -x ) 化简化简 sin x 3 cos x =2怎么解? cos^2 x - sin^2 x 是怎么化简=cos 2x cos^2 x - sin^2 x 是怎么化简=cos 2x的?