summ of trig functions (how to and where)

[migadrenaline]

sorry if not it the rigth place!

not only I would like to know how it's done but also would like to be advised in wich software can it be done with!

just simply would like the result of h(x)

f(x)= sin x

g(x)= sin (x + 2/3Pi)

h(x) = f(x) + g(x) = ?



(I need to "see" the graphic of the resulting wave form - that's why I've asked for the addequate software since I don't have a graphic calculator at hand)

(For curiosity - this is the result of two electrical phases in "triphasic electricity" - in our homes we use each one individually but sometimes they're combined - the result of using 2 phases is 220*√3 = 380 V (in EUA in UK would be 110*√3) - being an idiiot I haven't finished my eng degree and now I need your help on something that is so simple)

thanks!

 

[Deleted member 4993]

sorry if not it the rigth place!

not only I would like to know how it's done but also would like to be advised in wich software can it be done with! Wolframalpha.com

just simply would like the result of h(x)

f(x)= sin x

g(x)= sin (x + 2/3Pi)

h(x) = f(x) + g(x) = ?



(I need to "see" the graphic of the resulting wave form - that's why I've asked for the addequate software since I don't have a graphic calculator at hand)

(For curiosity - this is the result of two electrical phases in "triphasic electricity" - in our homes we use each one individually but sometimes they're combined - the result of using 2 phases is 220*√3 = 380 V (in EUA in UK would be 110*√3) - being an idiiot I haven't finished my eng degree and now I need your help on something that is so simple)

thanks!

.