化简cos(π/6+x)+cos(π/6-x)
已知cos(x-π/6)=-根号三分之三 则cos(x)+cos(x-π/3)的值是
设函数f(x)=2cos^2(x+π/6)-cos^2x
f(x)=4cos(wx-π/6)sinwx-cos(2wx+π) 化简
f(x)=4cos(wx-π/6)sinwx-cos(2wx+x) 求值域
f(x)=cos(ωx−π6)
已知f(x)=-1/2+sin(π/6-2x)+cos(2x-π/3)+cos平方x.
函数f(x)=-√2(sin2x+π/4)+6 sin x cos x-2cos²x+1
函数y=sin(3x+π/3)cos(x-π/6)+cos(3x+π/3)cos(x+π/3)的图象的一条对称轴的方
求值:sin(π/4+3x)cos(3/π-3x)+cos(π/6+3x)cos(π/4+3x)
f(x)=2SIN^2(x+π\4)-cos(2x+π\6) 化简 谢
已知函数f(x)=cos^2(x-π/6)-sin^2x化简
sin(π/3-3x)cos(π/3+3x)-cos(π/6-3x)sin(π/6+3x) 化简