Angles and graphs, basic question

  • Thread starter darkelf
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Is there a way of calulating the angles from the slope or coordinates of a graph. Say you have a bunch of x and y coordinates and you want to find the angles between those points at various coordinates (say every x,y ratio) can it be done?
How would you go about it?
yes,why not. :)

Angle between lines joining [tex](x_1,y_1) \&\(x_2,y_2)=tan^{-1}\left( \frac{y_2-y_1}{x_2-x_1}\right)[/tex]
Last edited:
Angles between lines joining? If you have a single slope that doesnt intercept at the x or y axis?
Have another look at skand's answer. Slope means rise over run, right? So if you have the slope, then you have the tangent of the angle.

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