化简sin(a-x)cosx+cos(a-x)sinx的结果为
化简sin(a-x)cosx+cos(a-x)sinx的结果为
已知sinx+cosx=a,求sinxcosx;|sinx-cosx|;sin^3x+cos^3x;tanx=cotx
满足sin(x+sinx)=cos(x-cosx)的锐角x为几
x为锐角,试比较cosx,sin(cosx),cos(sinx)的大小
已知函数f(x)=sinx+cosx求f(0)的值,若f(x)=0,求sin(A-x)+5cos(2A-x)/sin(3
化简sin(x+y)sinx+cos(x+y)cosx等于?
化简sin(x+y)sinx+cos(x+y)cosx
化简cos(x+3o.)CoSx+Sin(x+30.)Sinx
化简cos(x+y)sinx-sin(x+y)cosx
当x的范围为(0,π/2)时,设a=sin(cosx),b=cos(sinx),求a、b的大小关系.
化简sin^4x/sinx-cosx - (sinx+cosx)cos^2x/tan^2x-1
已知sinx+cosx=m,则sin立方x+cos立方x的值为