hp 48gii Trig function help

[jacw1]

Hi,

I'm not sure what I have done to my calculator but instead of giving me the answer for a trig question (e.g cos 40 = 0.76604444311) it just comes up with cos(40).

I have it set in Deg, XYZ, DEC, IR= 'X'

Any help returning it to giving me answers would be gretaly appreciated.

[BartdB · Accepted solution]

Hi,

Your calculator is in Symbolic and Exact mode.

In the MODE menu, select CAS (F3) and put a check next to either or both "_Numeric" and "_Approx"

To see more on these and other CAS modes, see the Appendix C in the User's Guide

http://h10032.www1.hp.com/ctg/Manual/bpia5322.pdf

Also see the Advanced User's Reference Manual.

http://h10032.www1.hp.com/ctg/Manual/c02836298

Appendix C, flags -3 and -105 describe Symbolic and Approx modes.

( section 1 provides an introduction to RPL programming
  section 2 provides programming examples and
  section 3 provides details of each command of the 50g)

You may also be interested in the website HPCalc.org which has lots of documentation, programs and support material for the 48gii:

www.hpcalc.org

[Maké]

Hi!, @jacx1:

Welcome, to Forum !.:smileyhappy:

See, the images, with the better explicited, each configuration ...

Right Shift + Modes

Press D, key (FLAG)

Now, download, the bar, with down arrow key, to 03. 

Press C key (FLAG) and check ... after press F (OK) key

Press, EVAL key ...

[BartdB]

Hi,

Keyboard shortcuts:

If you find yourself in Symbolic and Exact mode, and want a numerical answer without changing the mode:

press Red Right-Shift then ENTER ( -> NUM )

To toggle Approx mode on or off:

press and hold Red Right-Shift then ENTER (pressing them together)

(you will see the = and ~ change at the top of the display, = is Exact and ~ is Approx mode)

(note this toggles only Approx mode, not Numeric mode)

Hope this helps.

[Maké]

Hi!, @jacw1:

You can see, one important document, from Joseph Horn, with the FLAGS and your applications, from ... http://www.hpcalc.org/details.php?id=3535