sin(π/12)-根号3倍cos(π/12)的值
sin(π/12)-根号3倍cos(π/12)的值
cosπ/12+(根号3)×sinπ/12的值
已知sin(3π-α)=根号2倍的sinβ,根号3倍的cos(-α)=-根号2倍的cos(π+β),0<α<π
根号3 sinπ/12+cosπ/12的值是多少
sin派/12-根号3 cos派/12的值
根号3×cosπ/12-sinπ/12=?
求sin π/12-(根号3)cos π/12
已知sin(阿尔法+π/3)=a,那么根号3sin阿尔法-cos阿尔法的值
cos(π/3-α)=1/8,则cosα+(根号3)sinα的值为____
已知根号3sin-sin(π/2-2θ)/cos(π+θ)*cosθ=1,θ属于(0,π),求θ的值
已知;cos(a+π/6)-sina=2倍根号3/3,则sin(a-7π/6)的值为
已知cos(α-π/6)+sinα=(4倍根号3)/5,则sin(α+7π/6)=