1. The problem statement, all variables and given/known data so there is this problem : find the amplitude from the superposition of Z1 and Z2 where Z1 : 8 sin 100t, A1= 8m and Z2 : 6 sin (100t-pi/2), A2=6m 2. Relevant equations i know that all we need to do is add them and do the trig using sine additon, but i couldnt do that because the amplitude is different. 3. The attempt at a solution yeah they give me the key answer but i dont understand because the solution only stated that all you need to do was do pythagorean theorem based on each amplitude.