I am trying to construct a complex waveform this formula.

V=141.4sin240pit+28,3sin720pit+14.14sin(1200pit-69deg)

Now i have tried to do it by hand but my fundamental wave dont make 1 cycle in 8.3 ms the way it should do.I dont know if i have used the formula correctly to obtain each plot. I assume you get the sin of 240pit(t will be different for each ms) and then multiply it with 141.4.Please can somebody shed some light.