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# Sine & Cosine Waves Stencil

by PeriniM Jan 13, 2016

### Thing Apps Enabled

Maybe I don't understand how to use this correctly for cosine, but is there supposed to be a way to make seamless cosine curves when starting at the y-axis? It seems to me you have to position the stencil so that the peak of the curve straddles the y-axis, and then draw 3/4 of the curve. Then move the stencil (and try to line it up as best you can), and finish the remaining 1/4 of the curve. As you can see in my attached drawing, I get a seamless sine curve, but my cosine curve has an interruption at 270°. Am I doing it wrong?

Amazing and very useful!
Any chance you will add or make a similar version for tangent function?

nice work bro

I really like this 'thing' but I am not sure I understand it. Is the inverted T-shape above the "sin" text meant to indicate the position of the origin of the axes? If so it looks like Sin starts at a maximum point at the origin, and cos at a minimum, but sin (0)=0, i.e. there is an x-axis intercept at x=0, not a maximum. Cos(0)=1 so there should be a maximum at x=0.... am i misinterpreting your intended meaning with the "T-shapes"?

Again, this is a brilliant idea and thank you for sharing. Dan.

Glad you like it :) T-shapes are just for aligning the stencil to the sheet's squares, they don't refer to sine and cosine's shift of phase.

Thank you again

Very nice stuff! I like it a lot!

Our project is very amazing. Our simplicity is beutil;

I would have loved this back in school.

Nicely done!

Thank you! :)