1. The problem statement, all variables and given/known data Three light waves combine at a point where their electric field components are E1 = Eo[tex] sin \omega[/tex]t E2 = Eo[tex] sin (\omega[/tex]t - 2[tex]\pi[/tex]/3) E3 = Eo[tex] sin (\omega[/tex]t + [tex]\pi[/tex]/3) Find the resultant amplitude of the electric field ER at that point and it's phase angle[tex]\beta[/tex] Write the resultant wav int the form E = ER[tex] sin(\omega[/tex]t + [tex]\beta[/tex]) 2. Relevant equations 3. The attempt at a solution Am I right in assuming that first you add E1+E2 then add E12 + E3 using double angle formulas? Or am I going about this completely the wrong way?