I am completely new (Arduino UNO for one day) and I think I understand the basics. I understand how to install a standard library from sketch/import library (I am using a Apple Mac) I want to use acos asin atan2 and so need to use an external library. I found this one: http://www.arduino.cc/en/…

Installing external libary help

system September 6, 2012, 10:42am 2

I think math.h is included automatically, if you need it.

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