Colin McKay wrote: > A=242641, B=2.828427, C=1.414214. VV=C^2-A^2-B^2/(-2*A*B)
A=4.242641 surely. And VV=(C^2-A^2-B^2)/(-2*A*B). > VV calculated, and printed, in QPC2 =1. VV calculated on a calculator > =-24.00000071/-24.00000071=1. > > Used in QPC2 in RR=ACOS(VV) produces the error message "At line 2345 :1 > error in expression". Works fine here. But these are floating point values and any rounding error might push the value slightly above 1, this is in the nature of things. PRINT will always return a rounded value, so you'll still see only "1". Marcel _______________________________________________ QL-Users Mailing List
