Easter Sunday Trigs ( rpn38-CX)

[Gerson W. Barbosa]

(04-13-2016 10:55 PM)bshoring Wrote:  After updating my HP-38C with the new steps and constants in R4-6, I get
0.9999 GTO 38 R/S --> 0.8102920566 (.810291465 with my HP-35v.4)

I get exactly the same on my HP-12C and my HP-35v.3, respectively.

(04-13-2016 10:55 PM)bshoring Wrote:  TAN:
.00000 I get .01690354059 on HP-38C.
89.999 I get Error 0 (divide by 0) on HP-38C.

The latter was supposed to be 89.99. Fixed. Thanks!

For .00000, I get tan(.00000) = 0, as it should be.

(04-13-2016 10:55 PM)bshoring Wrote:  ArcTan:
.00000 I get Error 0 on HP-38C
99.999 I get 8.942705958E+01 on HP-38C

I get arctan(.00000) = 0.

For arctan(99.999) my HP-12C returns 8.942705958E+01 just like your HP-38C. Another copy & paste error. Fixed. Thanks!

(04-13-2016 10:55 PM)bshoring Wrote:  Going through this exercise gives me a great respect for the talented minds that created the first HP-35 !

My feelings as well. They did milk a stone!

Regards,

Gerson.