I've been struggling with this all weekend (adding and subtracting 2 AC wave forms - phasor and graphically)and although I am starting to understand little bits, I need help. I have found the worksheets on this web site but still can't seem to work out the answer. The worksheet shows 2 sine waves and then gives the following detail -

*What do you suppose the sum of a 1-volt (peak) sine wave and a 2-volt (peak) sine wave will be, if both waves are perfectly in-phase with each other?*

Hint: you will need to enter equations into your plotting device that look something like this:

y1 = sin x

y2 = 2 * sin x

y3 = y1 + y2

Hint: you will need to enter equations into your plotting device that look something like this:

y1 = sin x

y2 = 2 * sin x

y3 = y1 + y2

Even with this, I'm struggling. Then I have to work out the answers by phasor - headache does not come close.

I would appreciate any guidance please.

Thanks