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My guess is that this is to be inferred by calling it a "sine" wave (as opposed to a "cosine" wave, for instance). Authors often think that the two are somehow different since they are quite distinct in a trigonometry class but forget that when talking about sinusoidal waveforms that it is purely a distinction due to an arbitrary choice of time reference (and, arguably, even in trig it is a matter of arbitrary choice of reference axis, but that is much more highly standardized than time reference).The question ignores the phase angle at t = 0.
v(t) = V sin(ωt + φ)
You can solve for V if you assume φ = 0.
It sounds like you might be well served just working on your algebra skills. That way you don't need to know a bunch of different formulas and variations on them, but rather can work with a few fundamental formulas and manipulate them to get what you need. In this case, you haveI understand what you are talking about. I tried every different way I knew how to to try to formulate an answer to the question. I would have took me a long time until shtell01 posted 50/sin (w*t).....where I keep trying to find from 20sin(w*t) hours before I joined the form. Is there any other variations of these equations that you know that might be helpful or things for me to experement with?
Just algebra. The basic concepts of algebra is very simple -- whatever you do to one side of an equation you do to the other. As long as you do the same thing to both sides (there are some caveats such as dividing by zero not being allowed), then the two sides remain equal. So, for example, if I want to find the value of x that makes the following equation true:Thanks again for the help. Just curious but did you figure out how to solve for Vm with just a back round in algebra (or various areas in math) or did someone show you that equation and how to apply it in order for you to know it. I do not plan on becoming an engineer nor am I attending school, I am not the best with math but most things I do work on have a much greater accuracy the 1%. Greater then 1% is the standard for audio synthesizers. I know Michael Faraday was not very well educated nor was nikola tesla very fond of math so I suppose I too can figure all this out?
Oh, no one here is ever obligated to reply or help -- we do so because we want to.Good deal! I remember some of it now seeing it again. Areas, and volumes I just went through in magnetic circuits. I have several algebra books. I have been purchasing and gathering everything I think I need already? At least in my research here is what I found and these reflect my purpose: circuits, electronics, passive and active network analysis and synthesis, electromagnetic and electromechanical machines, Laplace transformation and fourier series. My plan was to just learn the math I didn't know as I went along till I got through circuits and electronics, but I am open for suggestions. Thank you for taking time once again and I hope you didn't feel obligated to respond or help.
That is standard equation for sinusoidal signals. Your particular example has phase angle of zero. The full equation is the one MrChips posted:Thanks again for the help. Just curious but did you figure out how to solve for Vm with just a back round in algebra (or various areas in math) or did someone show you that equation and how to apply it in order for you to know it. I do not plan on becoming an engineer nor am I attending school, I am not the best with math but most things I do work on have a much greater accuracy the 1%. Greater then 1% is the standard for audio synthesizers. I know Michael Faraday was not very well educated nor was nikola tesla very fond of math so I suppose I too can figure all this out?
Actually, MrChips posted that.That is standard equation for sinusoidal signals. Your particular example has phase angle of zero. The full equation is the one WBahn posted:
V=Amplitude*sin(2*pi*f*t+phase angle)