Question 637990
find all solutions in the domain 3 tan(x/2)+3= 0
let us continue from where you left off: 
For domain [0,360º]
tan(x/2)=-1
x/2=135º (in quadrant II where tan<0)
x=270º
or
x/2=315º (in quadrant IV where tan<0)
x=630º