cos(π/4+x)=3/5,17/12π

cos(π/4+x)=3/5,17π/12 一、已知cos(π/4+x)=3/5,17π/12 若cos（π/4+x）=3/5,17/12π 已知cos(π/4+x）=3/5,17π/12 已知cos(x+π/4)=3/5且17π/12 若cos(π/4+x)=3/5 17π/12 已知cos(π/4 +x)=3/5,17π/12 已知cos(π/4+x)=3/5,17π/12 化简sin(3π-x)cos(x-3/2)cos(4π-x)/tan(x-5π)cos(π/2+x)sin(x-5/2π 若cos（π/4+x)=3/5,求值 已知cos(π/4+x)=3/5 ,0 cos(派/4+x)=3/5,17派/12