OK think I have finally understood. The answer I have come up with is:
Vc = 2.0007sin(314.2t-59.99°)
Thank you all for your help and if someone would confirm my answer for my peace of mind that would be great.
I have seen this identity and if I insert my figures it does confirm that my addition of the points is correct. It is the simplifying / putting it back into the original form that I cannot understand. I will look into this further and get back to you.
Thank you for your patience.
Thank you arildno for your help and your criticism. I have now been looking into this for over eight hours all in all and I am sure I am missing something very obvious but I just don't get it.
Unfortunately I work full time and have family responsibilities and I don't have any more time to...
Just spent another two hours trying to get my head around this. I am sure I will appear to be pretty dumb to you clever people.
I have drawn the two sine waves on a graph and created a table of values, I have added these together and plotted the resultant wave. This has confused me even more...
Thank you for your responses. I have to go to work now but I will look into what you have suggested when I return. I appreciate what you have said arildno and will take it on board.
DrewD I am new to this forum and only realized after I posted that it was in the wrong section. I will be more...
I do see your point and it was a valid one. I was frustrated after hours of fruitless searching on the internet for an answer to this question but as you say there is no excuse for sloppiness as it just causes confusion.
I am sorry if I have offended you with my lack of knowledge or how the question was laid out for me. I just wanted a little bit of help with a maths problem and thought I might get some here.
I have two expressions Va = 2 sin (314.2t) and Vb = 2 sin (314.2t - 120°) and I need to know how to add...
My book stated the question exactly as I wrote it on here so I guess the author is sloppy and making approximations.
This is what really annoys people about forums lots of arsey know-it-alls who don't want to help just to show off how clever they are. Well done you
I need to add together the following sine waves and express the answer in the same form:
Va = 2 sin (314.2t) + Vb = 2 sin(314.2t - 120°)
Any help would be greatly appreciated.