Question about Texas Instruments TI-89 Calculator

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Hi i was just wondering how I can change my calculator from degrees to radians and vice versa?

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Press the mode button, goto down to angle, press the [>] key, then you will be able to set it to whatever.

Posted on Dec 31, 2008

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1 Answer

Ti-nspire cx CAS gives answer in degrees even though it is in radians mode.


When you set some configuration parameter you must scroll down the setup until you reach the OK button. Press the OK button to validate.

Oct 09, 2014 | Texas Instruments TI-Nspire CX CAS...

2 Answers

My calculator is not computing sin^-1 or cos^-1 correctly, I put sin^-1(0.184) in and it came out with 10.60283... when I should be getting 1.39. HALP?


When the angle unit is in radians
sin^-1(0.184)=0.1850543940 radians
When angle unit is in degrees
sin^-1(0.185)=10.60283581
Your calculator is calculating the functions correctly)
In the following screen captures the sine of the values is calculated with the unit specified inside the formula (degree symbol and radian symbol are inserted to show you the unit). In the last calculation the value of the sine is practically 0.184
Remember that when angle is in radians, for very small angles (less than 10 degrees), sin(x) and tan (x) are about equal to the value of the angle in radians

0115ee6b-649e-45fc-824c-f8abe88bac58.png

Mar 25, 2014 | Casio FX-115ES Scientific Calculator

1 Answer

How do I compute degrees?


What do you want to do with it? Convert an angle in degrees to radians? Calculate its sine, cosine, tangent, or other trigonometric function? Convert a temperature in degrees Celsius to degrees Fahrenheit or vice versa?

Feb 20, 2013 | Texas Instruments TI-30Xa Scientific...

1 Answer

Hi How do i do sin inverse on my calculator. I have tried shift then sin (which is sin inverse) and then the sum but it gives the wrong answer?


You may be working in degrees when you need to be in radians, or vice versa.

Press the MODE button until it offers you the choice D R G (Degrees, radians, grads) and select the corresponding number. Then try again.

Apr 20, 2011 | Casio FX83ES Scientific Calculator

1 Answer

Arctan function is not computing correct answers. for ex. artangent or tan-1(1) = .785 not 45 degrees


Perhaps you need to go to "Mode" and switch "Radian" to "Degree" or vice versa.
I'm not entirely sure because I don't follow any more math/science classes, but I remember there sometimes being a problem with those specific settings.

Mar 06, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

HOW DO I CHANGE THE RADIANS MODE TO DEGREE MODE BECAUSE MY CALCULATOR IS IN RADIANS AND I WANT TO CHANGE IT TO DEGREES


Hi,
Turn calculator ON.
If you do not see icons, press MENU.
Use arrows to highlight the RUN icon and press EXE
In RUN application press SHIFT and SETUP
Use Down Arrow to highlight the line Angle
Press F1 to select Deg and press EXE.
This action will return you to the RUN application (main calculator screen).

Hope it helps.

Nov 27, 2009 | Casio FX-9750GPlus Calculator

1 Answer

Using Tan,sin, cosin


Alot of people seem to be having this problem. Angles can be measured in two units, degrees and radians. Your calculator is currently doing everything in terms of radians. I have an 84 but I'm sure the 83 is similar, go under MODE and look for Degrees and Radians and make sure you choose degrees. if you have to convert 360[degrees] = 2* pi [radians]
(easy to remember, 360deg in a circle, 2pi radians in a circle)
Good luck

Aug 11, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

Don't know how to change it from degrees to radian mode


if you press the |mode| button (at the top right of the calculator) until you see Deg Rad Gra on the screen (I believe 3 presses of the mode button) and just hit the number below the rad option on the display. This will permanently change it to radian mode until you repeat this step, or clear the memory.

There is also a way to change to radian mode for just one operation if you will be mostly using degrees for example

at the bottom there is a DRG> as a shifted function. I would just recommend changing it in the way I initially outlined as there is less room for error when making calculations.

Apr 22, 2009 | Casio FX-300MS Calculator

1 Answer

Radians and degrees flipped


reset ur calculator. press 2nd 6 F1 3 Enter. Note that all your data will be gone

Jun 07, 2008 | Texas Instruments TI-89 Calculator

4 Answers

TI-89


Angle mode, Degree/radian setting, Chapter 2, pg 53 (pg70 of 623) Tan instructions pg 510 (appendix A pg 527 of 623) Here's your manual, download this file: http://www.ti-89.org/uploads/ti-89-manual.pdf

Jun 07, 2007 | Texas Instruments TI-89 Calculator

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