Computing angles

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I have three nulls, how to compute any angle of the triangle they form using chops?

I know about obj chop to calculate distabces, I use wave to create sin but I'm a bit stuck with it.
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Once you have the distances, one way is to use the cosine law [en.wikipedia.org]. Use the Math CHOPs for most of the formula and then a Function CHOP for the arccosine.
Edited by - July 9, 2006 10:30:10
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Oh yes, I must have been very tired, but I thought that might be one of these cases when you sit for hours over something accessible wuth one click somwhere else
Here goes a solution.
Thank you Edward.

Attachments:
k_angle_measure.zip (24.1 KB)

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