What is the difference between these two terms, or are they completely synonymous? I have frequently seen either used in connection with pitch and roll.
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closed as off topic by Ittay Weiss, Jonathan Christensen, Paul, ncmathsadist, Antonio Vargas Feb 7 '13 at 3:41
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Azimuth seems to be used to represent an absolute heading, while yaw is a measurement of how much a craft turns from its current orientation.
Thus, if your azimuth went from $90^\circ$ to $184^\circ$, your yaw was $94^\circ$, while your current azimuth is $184^\circ$.