calculation of angles

[Hilton Evans]

"Mark" <gatfix at hotmail.com> wrote in message news:83d7hj$ih5$1 at nnrp1.deja.com...

> 
> (a) why atan2(y,x) is preferred to atan(y/x);

    atan(y/x) offers no protection against x=0
    
    
-- 
Hilton Evans
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