Reposted - did not have correct tag first time round :-(


I have a routine by Alex Franke that gives sin angles and cosine from =
which I can derive tan( x ) =3D sin( x ) / cos( x )

Alex indicates to get ARCTan They're simply the inverses...   arctan ( =
tan(x) ) =3D x

What I don't understand is how to get arctan from a tan fraction or how =
to get the inverse tan function in assembler code.

:-( Roy


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