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+--- Thread: Program for converting degrees to radians and vise versa (HP Prime) (/thread-18216.html)
Program for converting degrees to radians and vise versa (HP Prime) - IsaiahG0701 - 04-03-2022 06:39 PM
I remember on the previous update I created a program that could convert degrees to radians and radians to degrees in maybe 1 or 2 keystrokes. Unfortunately, this program is no longer supported on my calculator. Rather than go through the units and do the tedious process of conversions. Is there a quicker and more effective method to do this. I remember the program being called D2R (Degrees to radians) and R2D (Radians to degrees).
RE: Program for converting degrees to radians and vise versa (HP Prime) - Tyann - 04-04-2022 05:33 AM
(04-03-2022 06:39 PM)IsaiahG0701 Wrote: I remember on the previous update I created a program that could convert degrees to radians and radians to degrees in maybe 1 or 2 keystrokes. Unfortunately, this program is no longer supported on my calculator. Rather than go through the units and do the tedious process of conversions. Is there a quicker and more effective method to do this. I remember the program being called D2R (Degrees to radians) and R2D (Radians to degrees).
Bonjour
Voici ce que j'utilise, si ça peut vous aider.
Hello
Here's what I use, if it helps.
Code:
EXPORT D_R(d)
// Valeur en °
BEGIN
UVAL(CONVERT(d*1_deg,0_rad));
END;
EXPORT R_D(r)
// Valeur en radians
BEGIN
UVAL(CONVERT(r*1_rad,0_deg));
END;RE: Program for converting degrees to radians and vise versa (HP Prime) - IsaiahG0701 - 04-04-2022 05:42 AM
Thank you so much! To start this would I go to the program tab?
RE: Program for converting degrees to radians and vise versa (HP Prime) - Tyann - 04-04-2022 10:53 AM
(04-04-2022 05:42 AM)IsaiahG0701 Wrote: Thank you so much! To start this would I go to the program tab?
Oui vous allez dans l'onglet programme et vous créez un nouveau programme
puis vous entrez le code de ces 2 fonctions.
Yes you go to the program tab and create a new program
then you enter the code of these 2 functions.
RE: Program for converting degrees to radians and vise versa (HP Prime) - Didier Lachieze - 04-04-2022 12:15 PM
As these programs are single line programs you can also define user functions using the Shift Define key (to the right of the Units key):
[attachment=10500] [attachment=10501]
Just use upper case letters for the variables : D and R instead of d and r.
RE: Program for converting degrees to radians and vise versa (HP Prime) - IsaiahG0701 - 04-05-2022 04:42 PM
Thank you so much! With these programs would I be able to simplify a decimal number into radian form? Like if I were to do 7.5*(4pi/135) and get .698. Would I be able to have this simplified into 2pi/9
RE: Program for converting degrees to radians and vise versa (HP Prime) - roadrunner - 04-07-2022 12:36 PM
(04-05-2022 04:42 PM)IsaiahG0701 Wrote: Would I be able to have this simplified into 2pi/9
Not with the programs above, but this:
Code:
EXPORT radexact(D)
BEGIN
CAS(EVAL("exact("+(D/π)+")"))*CAS(π);
END;program does do what you want.
RE: Program for converting degrees to radians and vise versa (HP Prime) - forexbob - 10-13-2022 10:15 PM
(04-07-2022 12:36 PM)roadrunner Wrote:(04-05-2022 04:42 PM)IsaiahG0701 Wrote: Would I be able to have this simplified into 2pi/9
Not with the programs above, but this:
Code:
EXPORT radexact(D)
BEGIN
CAS(EVAL("exact("+(D/π)+")"))*CAS(π);
END;
program does do what you want.
Hi,
I know this is late to the game... but I tried the above radexact program and it gives a strange result. I entered 45 degrees and it returned 38,646,433/2,698,030*pi when I would have expected pi/4. Is that an issue with Prime or the results that I can expect, which are not correct.
Thanks to anyone still "listening" to this thread.
Bob
RE: Program for converting degrees to radians and vise versa (HP Prime) - Ioncubekh - 10-23-2022 08:26 PM
Python math library has radians() & degrees() functions. Remember beforehand do
Code:
from math import *