已知sin(x+π/6)=1/4,.求sin(7π/6+x)+cos2(5π/6-x)的值急急急
已知sin(x+π/6)=1/4,.求sin(7π/6+x)+cos2(5π/6-x)的值
已知sin(π/6-x)=1/3,求sin(17π/6+x)+cos2(7π/3+x)的值
已知sin(x+π/6)的 =1/4,求sin(7π/6 +x)+cos(5π/6 -x)的平方的值
已知sinα(x+π/6)=1/4,则sin(5π/6-x)+sin(π/3-x)的平方=?
已知sin(x+π/6)=1/4,求sin(7π/6+x)+cos(11π/6-x)的值
已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x)
已知sin(x+π/6)=1/4,则sin(7π+x)+sin^2(5π/6-x)的值
已知sin(x+π/6)=1/4,求sin(7π/6+x)+cos(5π/6-x)平方的值
已知函数f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)=sin(2x-π/6) ,
已知sin(x+π/6)=0.25,则sin(5π/6-x)+sin(π/3-x)*sin(π/3-x)的值为多少
已知sin(x+π/6)=1/3,求sin(7π/6+x)+cos²(5π/6-x)的值
已知sin(x+π/6)=1/4,求sin(x+7π/6)+cos^2 (11π/6-x)的值