2sin 2Tcos2T/[1 + 2 cos^2 2T -1]
= sin 2T cos 2T/ [cos 2T cos 2T]
= sin 2T/cos 2T = tan 2T
= 2 tan T/[1-tan^2T]
Use the half-angle formula to simplify (sin4theta)/(1+cos4theta)
2 answers
Looks like tan 2T to me