Question

the equations of the currents in two parallel connected electric devices are i1=11.3sin(377t+pie/4) and i2=8.5sin(377t-pie/4). what is the rms value of the resultant current?

Answer 1

@nuts whenever you get a chance could you take a look at this ?

Answer 2

sorry x.x
@clarisseangela what you want to do is convert the two equations into phasor form first, and then add the vectors

Answer 3

you want to divide the amplitude by the appropriate factor of sqrt(2) to convert to the RMS voltage