17IIB TAN implementation Message #1 Posted by Jan (Switzerland) on 16 July 2002, 9:44 a.m.
17IIB – an excellent calculator for everyday work  unfortunatelly does not have trigonometry functions. It is easy to implement series expansions for SIN and COS in the HP solver. Of course TAN can be calculated from SIN/COS. It would, be more elegant to have a series expansion for TAN too, since it would allow to calculate the ARCTAN directly.
The series expansion for TAN appears to be not so practical for a pocket calcs, since it requires the implementation of Bernoulli Numbers. Anybody knows a simpler way?
Thanks
Jan
(Switzerland)
