We have listed 12 very simple,basic but useful function source in Flex in the previous article. The mathematical calculation will be used regularly in our Flash/Flex applications, we can easily find the open source libraries like 30+ useful as3 open source projects, but it’s superfluous when we only need calculate the distance between two points, or only want to get the circle area. Here is the list of 16 useful AS3 arithmetic & formulas. Have any proudly and recommendable? Leave your comments to share please.

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