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From: Aksel on 25 Jan 2008 17:57
I would first like to thank everyone who gave me advice in my other
topic and i was able to get my hands on a second hand HP 48.

One problem i have though is when working on trigonometry in radians
the calculator does not give me answers in fractions of pi instead it
gives me it as a decimal

------------------------------------------------------------
Example:

Sin30 = pi/6

Cos45 = pi/4

is what i want the calculator to display
-------------------------------------------------------------

I have tried searching the manual and on google however i have not
found much information. Maybe it is not possible but i thought i would
also try here and see what i get.

How do i display radian angles as fractions of pi on a HP 48?

Thanks again
From: reth on 25 Jan 2008 19:43
On Jan 26, 9:57 am, Aksel <akse...(a)gmail.com> wrote:
> I would first like to thank everyone who gave me advice in my other
> topic and i was able to get my hands on a second hand HP 48.
>
> One problem i have though is when working on trigonometry in radians
> the calculator does not give me answers in fractions of pi instead it
> gives me it as a decimal
>
> ------------------------------------------------------------
> Example:
>
> Sin30 = pi/6
>
> Cos45 = pi/4
>
> is what i want the calculator to display
> -------------------------------------------------------------
>
> I have tried searching the manual and on google however i have not
> found much information. Maybe it is not possible but i thought i would
> also try here and see what i get.
>
> How do i display radian angles as fractions of pi on a HP 48?
>
> Thanks again

I don't think you can...
This calculator (as well as many others before) is a professional tool
and served engineering professionals unlike educational ones targeting
people in school. I for one like this and dislike for that matter HP49
and above, having CAS etc. So you should get the HP50 toy rather than
the HP48 working horse :)
reth
From: John H Meyers on 26 Jan 2008 00:43
On Fri, 25 Jan 2008 16:57:40 -0600, Aksel wrote:

> How do i display radian angles as fractions of pi on a HP 48?

RAD .5 ASIN \->Q\pi ==> '1/6*\pi'

RAD 1 ATAN \->Q\pi ==> '1/4*\pi'

In HP48G[X][+] the "Qpi" command is in menu 93.02
(Left shift, Symbolic, NXT)

[r->] [OFF]
From: Bjoern Schliessmann on 26 Jan 2008 08:52
Aksel wrote:

> Sin30 = pi/6

Sin 30� does NOT equal pi/6, it's 0.5.

> Cos45 = pi/4

Same here, but it's 1/2*sqrt(2).

> is what i want the calculator to display

It seems to me that you'd like to convert degrees to radians here,
and not evaluate trigonometric functions?

Regards,


Bj�rn

--
BOFH excuse #157:

Incorrect time synchronization

From: Paul Schlyter on 27 Jan 2008 08:42
In article <0a088f62-99f3-4037-936f-1666e0695cdf(a)e23g2000prf.googlegroups.com>,
Aksel <aksel26(a)gmail.com> wrote:
>I would first like to thank everyone who gave me advice in my other
>topic and i was able to get my hands on a second hand HP 48.
>
>One problem i have though is when working on trigonometry in radians
>the calculator does not give me answers in fractions of pi instead it
>gives me it as a decimal
>
>------------------------------------------------------------
>Example:
>
>Sin30 = pi/6
>
>Cos45 = pi/4
>
>is what i want the calculator to display
>-------------------------------------------------------------

But that would be wrong, since the sine of 30 radians, or cosine of
45 radians, isn't pi/6 or pi/4 ....

>I have tried searching the manual and on google however i have not
>found much information. Maybe it is not possible but i thought i would
>also try here and see what i get.
>
>How do i display radian angles as fractions of pi on a HP 48?
>
>Thanks again


--
----------------------------------------------------------------
Paul Schlyter, Grev Turegatan 40, SE-114 38 Stockholm, SWEDEN
e-mail: pausch at stjarnhimlen dot se
WWW: http://stjarnhimlen.se/
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