Question about Texas Instruments TI-81 Calculator

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How do i enter 35 degrees 20 minutes into my TI-81 calculator

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As far as I know, the TI-81 doesn't have a degree-minute-second entry mode the later TIs have. But to answer your question, you can always do it as:
 35 + 20 / 60
followed by ENTER if needed.

If you're in Radian mode instead of Degree mode, you'd have to follow up with MATH 6 to specify degrees instead of radians.

Posted on Jan 22, 2010

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How do I input Degrees-Minutes-Seconds to convert to Degrees? Vice-Versa.


On any calculator, let's convert degrees-minutes-second to degrees and then we will do the reverse.

Let's start with the number of seconds in a minute - 60, so we must take the seconds and divide by 60 to get the number of minutes. Next, add the number of minutes. The number of minutes in a degree is 60, so we take this total and divide by 60. Now we add the number of degrees to get out final answer.

Example: 35 degrees 50 minutes 32 seconds
(32/60 + 50)/60 + 35 = 35.842222 degrees

Just out of interest, let's start with 35.842222 degrees and convert it to degrees-minutes-seconds. We know it is 35 degrees, the whole number. Now we have to determine the minutes and seconds. Start by subtracting 35 to get the decimal 0.842222. Now multiply by 60 to get the number of minutes. I get 50.5332. Subtract 50 from this and multiply again by 60. I get 31.9992, which rounds to 32 seconds.

Good luck.

Paul

Jul 06, 2015 | Texas Instruments TI-36 X Solar Calculator

1 Answer

I know how to convert between decimal degress and degrees, minutes, seconds, but how do you enter degrees, minutes, and seconds directly?


Enter it as DD.MMSS and then press 2nd [DMS-DD] to convert it to decimal for further calculations.

For example, to enter 21 degrees 34 minutes 45 seconds, enter 21.3445 then press 2nd [DMS-DD].

May 12, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

Degrees intead of radians


Press the MODE key. Use the arrow keys to move to the third line, highlight "Deg", press ENTER, then 2nd [QUIT] to exit.

Jan 15, 2011 | Texas Instruments TI-81 Calculator

1 Answer

How do i enter 46degrees 15minutes into my ti-36x calculator?


Enter DMS (Degrees/Minutes/Seconds) values as D.MMSSs, using 0s as necessary:
  • D degrees (0-7 digits)
  • . decimal-point separator
  • MM minutes (must be 2 digits)
  • SS seconds (must be 2 digits)
  • s fractional part of a second
For example, enter
  • 46° 15' as 46.15.
  • 179° 9' 2.54" as 179.090254, note the 0s in front of the 9 and 2.
Before using a DMS value in a calculation, you must convert it to decimal with [2nd] [>DD].

Jan 13, 2011 | Texas Instruments TI-36 X Solar Calculator

1 Answer

How do you put degrees mins & secs in a ti 84 plus


The DMS symbols are available under the ANGLE menu
Press [2nd][APPS] (ANGLE)
Under that menu you find the degree and minute symbol. To enter the seconds unit you use the key sequence [ALPHA][+] (")
To enter 1deg 15 minutes and 37 seconds
1 [2nd][APPS] [1:deg] 15[2nd][Apps][2:'] 37 [ALPHA] [+]

To enter a number in decimal degrees (eg 15.37)
  1. If angle unit is the degree just enter 15.37
  2. If angle unit is the radian , you must specify the angle unit as degrees: To enter 15.37 degrees you type 15.37 [2nd][Apps][1: degree] [ENTER].
To convert from DMS to DD and from DD to DMS, you use the sequence [2nd][Apps][4:|=>DMS].

Feb 08, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do I find degrees minutes and seconds on my ti 84 plus?


On this family of calculators, you do as follows
  1. Enter the first number (degrees), ex:15
  2. Press [2nd][APPS] (ANGLE) to access the Angle functions
  3. Select [1: degree symbol] [ENTER]
  4. Main screen shows 15 deg
  5. Enter the minutes, ex 25
  6. Press [2nd] [APPS](ANGLE) to access Angle functions
  7. Select [2:' apostrophe] [ENTER]
  8. Screen echoes 15 deg 25'
  9. Enter the seconds number, ex 32
  10. Press [ALPHA][+] (") to access the double quotation mark.
  11. Screen echoes 15 deg 25' 32"
  12. Press [ENTER]
  13. Calculator converts this in decimal degrees 15.42555556

To convert this back to DMS, press [ANGLE][|=>DMS][ENTER] and the calculator displays the original value 15 deg 25' 32"

Jan 11, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

TI 86


Press "2ND" "MATH" "F3" to invoke the Angle menu.

Enter the number of degrees, press "F3", enter the number of minutes, press "F3", enter the number of seconds, press "F3", then press "ENTER".

Feb 15, 2008 | Texas Instruments TI-86 Calculator

1 Answer

Help!!


You need to be in the degree mode. To do this push the mode button on the calculator (mine is located near the directional keys). Go down three rows to where it displays RAD DEG. Move your cursor (which is blinking) to DEG and press enter. This will highlight the DEG mode press your 2nd then CLEAR button to Quit back to the main screen.

Oct 10, 2007 | Texas Instruments TI-81 Calculator

2 Answers

Calculator quick working


Mine did the same thing and I was told by Texas Instruments that I can send it in for repair--for $81 since it is more than 1 year old.

Feb 16, 2007 | Texas Instruments TI-89 Calculator

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