-> >.... It's also not clear why the OP
-> >would insist on Arc-Cosine and Arc-Sine being intrinsic functions,
-> >since they're easily calculated from Arc-Tan (ATN in most BASICs).
-> >Similarly, DEG and RAD are equivalent to multiplication by 180/PI and
-> >PI/180 respectively.
By the same logic, why not get rid of COS and TAN? Both of them are
easily defined in terms of SIN. COS(X) = SIN(pi/2 - X). TAN(X) =
SIN(X) / COS(X).
Having COS and TAN adds convenience. The same would be true if ASN and
ACS (arcsine and arccos) were included in the language.
dow
