# Plotting graphs in three dimension

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1. Dec 1, 2015

### 24forChromium

I have function1: x = n(cos((pi/2)-2pi/n))
and function2: y = n(sin((pi/2)-2pi/n))

my goal is to plot a graph where for the same value of n, the x and y are respectively the horizontal and vertical component of the point, this graph should preferably possible to create on a computer or a graphing calculator like ti-84. Someone told me that this thing can be benefited from thinking in three dimensions, not sure what that means.

2. Dec 2, 2015

### Andre Filipe

I think those are parametric equations. I'm not sure how it works on ti-84, but if you search on YouTube how to plot parametric equations on ti-84, I'm more than certain you'll find something.

3. Dec 6, 2015

### davidmoore63@y

It might be easier to plot the curve in polar coordinates, which are:
r=n
theta=Pi/2 - 2Pi/n

4. Dec 7, 2015

5. Dec 7, 2015

### 24forChromium

Thanks a lot, how and where did you do this?

6. Dec 8, 2015

### Svein

Excel. Tabulate x and y against n and ask for a "scatter plot".