tanx=3 tan 2分之x是多少
tanx+tan(π/2 -x)=?
tan(x/2)=2.求tanx
tanX=2分之1,tan(x+y)=5分之2,那么tanY=?
求函数y=tan^2-tanx+1/tan^x+tanx+1的值域谢谢了,
tanX+tanX=2tanX还是等于tan^2X.谢
(1/2)已知X,Y满足sinXcosX分之1-cos2X=1,tan(X-Y)=-3分之2.(1)求tanX的值 (2
证明sec x+tanx=tan(π/4 +x/2)
已知3sinb=sin[2a+b]求证sin2x/[2COSx]乘以[1+tanx-tan[x/2]]=tanx
若sinx-sin(3π/2-x)=根号2,则tanx+tan(3π/2-x)的值是多少?
3sinX=sin(2X+Y) 求证:tan(X+Y)=2tanX
已知:3sinY=sin(2X+Y),求证tan(X+Y)=2tanX
已知5siny=sin(2x+y),求证:tan(x+y)=3/2tanx