已知cos(π/4 +x)=3/5,17π/12

已知cos(π/4+x)=3/5 ,0 一、已知cos(π/4+x)=3/5,17π/12 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,(1π)12 已知cos[x+(π/4)]=3/5,7π/12 已知cos(π/2+x)=sin(x-π/2) 求sin^3(π-x)+cos(x+π)/5cos(5π/2-x)+3s 已知函数f(x)=cos(2x-π/3)+sin^2 x-cos^2 x 已知函数f(x)=cos(2x-π\3)+sin²x-cos²x cos(π/4+x)=3/5,17π/12