hp35s amazon reviews VS MoHPC reviews

[Mark Hardman]

(10-29-2017 05:34 PM)DA74254 Wrote:  Cos 89,9999999999 (10 9's behind decimal point) Gives 1,74532925199E-12
Wolfram Alpha: 1,74532925199(cont:43295769...)E-12
Within the "range" of the 35s, it's correct.

Tan 89,9999999999: 572957795131
Wolfram: 572957795130,876798...

Please tell me where (and what) is "dud" here.

Try comparing the results for cos(89.99), cos(89.999); you will see errors of 7.0E-15 and 1.0E-14 respectively.