已知sin(π/3-x)=-1/5,且0
已知sin(π/3-x)=-1/5,且0
已知sin(π/4-x)=-1/5,且0
已知sinx+cosx=1/5,且0<x<π.求sin^3*x -cos^3*x的值
已知向量a=[cos(3x/2),sin(3x/2)],b=[cos(x/2),-sin(x/2),]且x∈[0,π/2
已知向量a=(cos(3x/2),sin(3x/2)),b=(cos(x/2),-sin(x/2)),且x∈[0,π/2
已知sin x+cos x=1/5,且0小于等于X小于等于pi,求sin x-cos x
已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x)
已知函数f(x)=根号3*sin(ωx)+cos(ωx+π/3)+cos(ωx-π/3)-1,(w>0,x属于R),且函
已知sin(a+x)=4/5,且sinacosa<0,求[2sin(a-π)+3tan(3π-a)]/4cos(a-3π
已知函数f(x)=4x^3-3x^2sinθ+1/32,其中x∈R,θ为参数,且0≤θ<π.
已知sinx+cosx=0.2,且x属于(0,π),求sin^3x-cos^3x
已知sin X+cos X=m,|m|小于等于根号2且|m|不等于1,求sin X^3+cos X^3,sin X^4+