(cos(3x+π/4)-sin(3x+π/4))/(cos(3x+π/4)+sin(3x+π/4))的值域 定义域 最
函数y=【cos(3x+π/4)-sin(3x+π/4)】/[cos(3x+π/4)+sin(3x+π/4)]的定义域,
化简sin(3π-x)cos(x-3/2)cos(4π-x)/tan(x-5π)cos(π/2+x)sin(x-5/2π
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1
三角函数已知P(-4,3) 求(cos((π/2)+x)sin(-π-x))/(cos((11π/2)-x)sin((9
f(x)sin^4x+cos^4x-1/sin(3π/2+x)cos(3π/2-x)的奇偶性
证明sin^2(x)+cos^2(x+30)+sin(x)cos(x+30)=3/4
已知函数f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)
f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+/4π) 三角函数
已知函数f(x)=sin^2*x-根号3*sinπ/4*x*cosπ/4*x
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
求化简f(x)=sin^2x+2根号3sin(x+π/4)cos(x-π/4)-cos^2x-根号3
f(x)=sin平方x+2根号3sin(x+π/4)cos(x-π/4)-cos平方x-根号3