若cos(π/4+x)=3/5,17/12π
cos(π/4+x)=3/5,17π/12
若cos(π/4+x)=3/5,17/12π
若cos(π/4+x)=3/5,求值
若cos(π/4+x)=3/5 17π/12
已知cos(π/4+x)=3/5,17π/12
若sin(π/2+x)=-4/5,x属于(π/2,π),则cos(π/3-x)=
一、已知cos(π/4+x)=3/5,17π/12
已知cos(x+π/4)=3/5且17π/12
已知cos(π/4 +x)=3/5,17π/12
已知cos(π/4+x)=3/5,17π/12
已知cos(π/4-x)=-3/5,求sin2x/sin(x+π/4)
化简sin(3π-x)cos(x-3/2)cos(4π-x)/tan(x-5π)cos(π/2+x)sin(x-5/2π