已知sin(a+ß)=1,求证tan(2a+ß)+tanß=
已知tan^2A=2tan^B+1求证sin^2B=2sin^2A-1
已知sin^2B=2sin^2A-1求证tan^2A=2tan^B+1
已知tan^2 a=2tan^ B +1,求证sin^2 b=sin^2 a -1
求解 已知 sin(a+b)=1/2 ,sin(a_b)=1/3,求证:tan a=5tan b
已知tan(A-B)/tanA+sin^2C/sin^2A=1,求证:tanA*tanB=tan^2C
已知tan(a-r)/tana+sin^2b/sin^2a=1 ,求证tan^2b=tana*tanr..
求证sin与tan 已知3sinB=sin(2A+B),求证tan(A+B)=2tanA
已知tan^2θ=2tan^2a+1,求证:cos2θ+sin^2a=0
求证[1]1-2sin acos a/cos²a -sin²a =1-tan a/1+tan a.[
已知,tan(A-B)/tanA-sin²C/sin²A=1,求证:tanA·tanB=tan&su
已知sin(a+b)=1,求证:tan(2a+b)+tanb=0
已知sin(a+b)=1,求证tan(2a+b)+tanb=0,