求sin π/12-(根号3)cos π/12
求sin π/12-(根号3)cos π/12
根号3×cosπ/12-sinπ/12=?
cosπ/12+(根号3)×sinπ/12的值
根号3 sinπ/12+cosπ/12的值是多少
sin(π/12)-根号3倍cos(π/12)的值
1、已知2根号3sin^2α+(2根号2-根号3)sinαcosα-根号2cos^2α=0,α∈(π/2,π),求sin
已知sin(π-α)-cos(π+α)=根号2/3 求下列各式的值
sinα-cosα=-(根号5)/5,α属于(π,3/2π)求
已知 cos π/5 =(根号5 +1)/4 求 sin π/5,sin -π/5 ,sin 4π/5 ,sin 3π/
在△ABC中,若sin(2π + A)=-根号2sin(π + B),根号3cosA=-根号2cos(π - B)求si
急求已知根号3sinθ-sin(π/2-2θ)/cos(π+θ)×cosθ=1 θ ∈(0,π) 求θ的值
根号[1-2sin(3-π)cos(3-π)]化简