It's probably best to list the size of your tank, from there it can be determined what Angels & Tangs will work together.
That size tank will cuts out most of the larger Angels, like Queens, French and Imperators, as they really should only be kept in 6'+ tanks. Even small Juv sizes of those Angels will out grow the tank pretty fast. You should look at the small(Pygmy) or medium size Angels. The same goes for the Tangs, as the larger species need bigger tanks than a 75gal tank.