Radians in pi?
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Radians in pi?
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panyan


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Joined: 29 Dec 2007
Posts: 142
Posted: 04 May 2008 09:49:14 am    Post subject:
is there a way to make the calc give me the degrees in radians in tems of pie?

E.G.

Normal case:

360degrees = 6.283185

Wanted:

360degrees = 2pi


this is only in the radians function, not degrees mode

thanks alot - im still trying to get calc perfect!!!

Last edited by Guest on 04 May 2008 09:49:37 am; edited 1 time in total
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vuurrobin


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Joined: 09 Aug 2006
Posts: 428
Posted: 04 May 2008 10:20:35 am    Post subject:
you can just divide the number with pi.
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panyan


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Joined: 29 Dec 2007
Posts: 142
Posted: 04 May 2008 11:48:48 am    Post subject:
but i want it to display:

30degrees = pi/6
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luby
I want to go back to Philmont!!


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Joined: 23 Apr 2006
Posts: 1477
Posted: 04 May 2008 01:14:16 pm    Post subject:
Well, that would take some advanced knowledge of ASM and Hooks, but It could be possible. Maybe. I would suggest memorizing them. Or if you want a program, there's this,
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panyan


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Joined: 29 Dec 2007
Posts: 142
Posted: 04 May 2008 01:37:48 pm    Post subject:
luby wrote:
Well, that would take some advanced knowledge of ASM and Hooks, but It could be possible.  Maybe.  I would suggest memorizing them.  Or if you want a program, there's this,
[post="123204"]<{POST_SNAPBACK}>[/post]


i think you need to check your link
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cjgone
Aw3s0m3


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Joined: 24 May 2006
Posts: 693
Posted: 04 May 2008 02:55:47 pm    Post subject:
30 degrees = 30\180 * pi.....

so simplify 30\180, use the program (this could be done like 30 seconds) and now you get 1\6 1\6 * pi = pi\6...


No there is no way on the calc, but its so easy, you just do (x\180)->fraction....then mutiply pi...

30 * (pi\180) = pi ( 1\6)...

Last edited by Guest on 04 May 2008 02:57:35 pm; edited 1 time in total
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Weregoose
Authentic INTJ


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Joined: 25 Nov 2004
Posts: 3976
Posted: 04 May 2008 02:57:47 pm    Post subject:
luby wrote:
Well, that would take some advanced knowledge of ASM and Hooks, but It could be possible. Maybe. I would suggest memorizing them. Or if you want a program, there's this,
There's also this:

Ans[font="times new roman"]°/[font="times new roman"]π[font="verdana"]r→A
{1,0→A
abs(A→B
0
Repeat not(A-Ans‾¹round(AnsA,0
{Ans,Ansint(B)+[font="arial"]LA(1→A
If fPart(B
1/fPart(B→B
max([font="arial"]LA
End
round(AnsA+{0,Ans→L2
{0,1→L1
LinReg(ax+b) Y1
Equ►String(Y1,Str1
3+int(log(a // [VARS] [5] [►] [►] [2]
sub(Str1,Ans+1,length(Str1)-Ans)+"[font="times new roman"]π/"+sub(Str1,1,Ans-2

75:prgmRADIANS would return 5[font="times new roman"]π/12, for example.

But seriously, 75[font="times new roman"]°/[font="times new roman"]π[font="verdana"]r►Frac really ought to be enough.

[EDIT] – Combined two lines.

Last edited by Guest on 11 Jul 2010 03:24:13 pm; edited 1 time in total
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luby
I want to go back to Philmont!!


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Joined: 23 Apr 2006
Posts: 1477
Posted: 04 May 2008 03:00:09 pm    Post subject:
The degree and radians symbol are found by 2nd +apps.
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Weregoose
Authentic INTJ


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Joined: 25 Nov 2004
Posts: 3976
Posted: 04 May 2008 07:32:53 pm    Post subject:
panyan wrote:
luby wrote:
Well, that would take some advanced knowledge of ASM and Hooks, but It could be possible. Maybe. I would suggest memorizing them. Or if you want a program, there's this,
[post="123204"]<{POST_SNAPBACK}>[/post]


i think you need to check your link
Actually, you're not missing much... Two-thirds of the code in that program goes into the title screen, while the functional part looks like this:

    Lbl 1
    Input "",A
    Disp A►Frac
    Disp A►Dec
    Goto 1


Last edited by Guest on 11 Jul 2010 03:25:54 pm; edited 1 time in total
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panyan


Member


Joined: 29 Dec 2007
Posts: 142
Posted: 05 May 2008 10:27:20 am    Post subject:
Weregoose wrote:
luby wrote:
Well, that would take some advanced knowledge of ASM and Hooks, but It could be possible. Maybe. I would suggest memorizing them. Or if you want a program, there's this,
There's also this:

Ans[font="times new roman"]°/[font="times new roman"]π[font="verdana"]r→A
{1,0→A
abs(A→B
0
Repeat not(A-Ans‾¹round(AnsA,0
{Ans,Ansint(B)+[font="arial"]LA(1→A
If fPart(B
1/fPart(B→B
max([font="arial"]LA
End
round(AnsA+{0,Ans→L2
{0,1→L1
LinReg(ax+b) Y1
Equ►String(Y1,Str1
3+int(log(a // [VARS] [5] [►] [►] [2]
sub(Str1,Ans+1,length(Str1)-Ans)+"[font="times new roman"]π/"+sub(Str1,1,Ans-2

75:prgmRADIANS would return 5[font="times new roman"]π/12, for example.

But seriously, 75[font="times new roman"]°/[font="times new roman"]π[font="verdana"]r►Frac really ought to be enough.

[EDIT] – Combined two lines. [post="123211"]<{POST_SNAPBACK}>[/post]


and how do i make that into a prgm?

Last edited by Guest on 11 Jul 2010 03:29:58 pm; edited 1 time in total
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Weregoose
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Joined: 25 Nov 2004
Posts: 3976
Posted: 05 May 2008 11:36:03 am    Post subject:
panyan wrote:
and how do i make that into a prgm?
From the home screen, press [PRGM], highlight NEW, select 1:Create New, and start putting things together. If you have trouble locating a command, then refer to the CATALOG ([2nd] [0]).

I'm wanting you to try this at least once; if it doesn't pan out, then I'll convert it so you can just send it over.
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panyan


Member


Joined: 29 Dec 2007
Posts: 142
Posted: 08 May 2008 02:08:39 pm    Post subject:
^fair enough - when my exams are over ill devote alot of time to it - thanks for your help

p.s. isnt it easier to copy paste into notepad and then change extension to 8xk?

UPDATE:

it is pretty easy when you get started, with the limited time i had i got up to here, i didnt really understand your previous posts, so i tried to write both, but i really hope it yields 30degrees = pi/6

Last edited by Guest on 08 May 2008 02:21:03 pm; edited 1 time in total
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Weregoose
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Joined: 25 Nov 2004
Posts: 3976
Posted: 08 May 2008 03:07:27 pm    Post subject:
Looks like you're having trouble (getting commands confused, etc.), so you may just download it here instead.
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panyan


Member


Joined: 29 Dec 2007
Posts: 142
Posted: 09 May 2008 10:34:32 am    Post subject:
Weregoose wrote:
Looks like you're having trouble (getting commands confused, etc.), so you may just download it here instead.
[post="123412"]<{POST_SNAPBACK}>[/post]


instead of just using your verison, im gonna have a look at it to see if mine can be salvaged so i can atleast learn something - thanks
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panyan


Member


Joined: 29 Dec 2007
Posts: 142
Posted: 11 May 2008 08:52:48 am    Post subject:
ok, i;ve had a look, but then i use the program, it says that 30degrees is 747867pi/25709533 - how can this be foxed so that it says 30degrees = pi/6?

thanks for you help

Last edited by Guest on 11 May 2008 08:53:07 am; edited 1 time in total
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Weregoose
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Joined: 25 Nov 2004
Posts: 3976
Posted: 11 May 2008 11:26:15 am    Post subject:
Don't write the degrees symbol in front of your input – I thought having it like that would make it easier. If you do want to keep writing °, though, then remove the ° after Ans at the beginning of the program. Smile

Last edited by Guest on 11 Jul 2010 03:30:35 pm; edited 1 time in total
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panyan


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Joined: 29 Dec 2007
Posts: 142
Posted: 12 May 2008 12:48:32 pm    Post subject:
thanks for all your help, can i ask how i'd be able to make it into an actual prgm which would say:

1) angle in degrees?
2) in terms of pi?
3) answer!

or something along those lines?
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Weregoose
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Joined: 25 Nov 2004
Posts: 3976
Posted: 26 May 2009 05:01:27 am    Post subject:
Going back over this, I thought I'd remake it for those who aren't working with fractions of degrees:

If fPart(Ans
180Ans/[font="times new roman"]π
gcd(Ans,180)‾¹(180+{0,Ans→L2
{0,1→L1
DelVar Y1LinReg(ax+b) Y1
Equ►String(Y1,Str1
1+int(log(a
sub(Str1,1,Ans)+"[font="times new roman"]π/"+sub(Str1,Ans+3,1+int(log(b

Again, a and b are the EQ VARS that get updated by the regression.

It should work regardless of mode or whether the degree symbol is suffixed to the input.

[EDIT]

...Except for when the regression yields funky results, as in the case of θ=72°.

[EDIT×2]

For some strange reason, this program threw a domain error at me whenever Y1 was occupied at the start of the program. The above code has been edited to prevent that.

Last edited by Guest on 11 Jul 2010 03:20:01 pm; edited 1 time in total
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