Easter Sunday Trigs ( rpn38-CX)

[Gerson W. Barbosa]

(03-29-2016 05:53 AM)bshoring Wrote:  I like it. Really efficient use of Recall Arithmetic. Extremely accurate.

Well, perhaps not that efficient. It's always possible to squeeze in another step if one needs to. As I prefer sine first, I've managed to insert an x<>y instruction between √x and GTO 00 (step 30).

Code:


16 - 21 8         STO 8
17 - 21 51 8      STO + 8
18 - 3            3
19 - 22 8         RCL 8
20 - 22 61 8      RCL × 8
21 - 41           −
22 - 61           ×
23 - 31           ENTER
24 - 31           ENTER
25 - 61           ×
26 - 32           CHS
27 - 1            1
28 - 51           +
29 - 24 21        √x
30 - 33           x≷y
31 - 25 7 00      GTO 00

New usage:

R/S: sine
R/S x<>y: cosine
R/S x<>y /: tangent

Tangent now requires an extra keystroke, but I don't mind as sine is used most often, I think.

Regards,

Gerson. [/code]