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

Can't change it from degree mode to radian

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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.

Posted on May 06, 2009

  • ESTHER PARK
    ESTHER PARK Feb 26, 2015

    OMG THANK YOU SOOOOO MUCH!!!!!!

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SOURCE: do not know how to change my Casio calculator

Press SHIFT MODE 4.

Posted on Oct 23, 2011

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SOURCE: HOW DO I CHANGE THE RADIANS MODE TO DEGREE MODE

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.

Posted on Nov 27, 2009

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Related Questions:

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How do I change the mode from Degrees to Radians?


Press the DRG key (top row) to cycle through the three angular modes.

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Sin(30)=


The sine of 30 radians is about -0.988 while the sine of 30 degrees is 0.5 .


To change the angular setting, press MODE, down-arrow to the "Radian Degree" line, highlight Degree, press ENTER, then 2nd QUIT to exit the mode screen.

Jul 26, 2012 | Texas Instruments TI-84 Plus Calculator

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I have to take the secant of -1.2. I'm supposed to get a degree. I can't figure out the order to push buttons. PLEASE help!


TWO THINGS YOU NEED TO KNOW, Eli.1. Secant will NEVER return a degree measure (or even a radian measure) no matter what computer or calculator you use. The reason is because secant returns the ratio of sides (hypotenuse over adjacent), which has a range of and find its reciprocal (ie, flip the number upside down: the reciprocal of 5 is one-fifth). That's all.B. TI-84 only uses the three basic trig functions. Secant is the reciprocal of cosine. Therefore, in order to find the secant of -1.2 radians you need to be in Radian mode (see #2 above). From there, you just find the cosine of -1.2 and take that values reciprocal (ie, flip the number upside down: the reciprocal of 10 is point one) . That's all. Math lesson: 1 Radian = 180 Degrees. Therefore, 1.2 Radians is roughly one-third of pi, therefore it is roughly one-third of 180 degrees; therefore -1.2 radians would be nearly -60 degrees (a very friendly angle measure). I hope that helps If not, you should call Texas Instruments because they've got friendly people who are happy to assist anyone. Questions like this are right up their ally, advanced questions like the syntax of the poisson cumulative distribution function are not. So, you're fine. For in depth math help holler at www.THEMATHCHEETAH.comIn Short: Secant returns ratios and NOT degrees or radians. Secant is the reciprocal to cosine. Arcsecant WILL return degrees/radians. Your calculator can be set to either mode.TEXAS INSTRUMENTS >>>>> all calculators ever made.

Mar 08, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do I get from degrees to radians? For some reason my TI-84 will not convert degrees to radians.


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Press the [MODE] key to access the mode comfiguration screen .
Set angle unit to to radian (see above)
Enter angle value in Decimal degrees only, use the [2nd][ANGLE] key sequence to have access to the degree symbol. The degree symbol must imperatively appear at the end of the angle value.

656a55a.jpg

Here are some examples
If you use angle values in DMS, it will not be converted to radians, but to decimal degrees.
If you omit the degree symbol there is no conversion.

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A general formula is Pi radians =180 degrees
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Feb 10, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

I am getting the wrong answers with the tan -1 function


Hello,
That habit of TI, Casio, and Sharp to label the inverse trigonometric functions with the -1 superscript can cause confusions.
  1. The inverse trigonometric functions arcosine, arcsine, and arctangent (labeled by manufacturers as cos^-1, sin^-1, and tan^-1) should not be confused with the other trigonometric functions known as secant(x) =1/cos(x), cosecant(x)=1/sin(x) and cotangent(x) = 1/tan(x).
  2. To avoid errors in the use of the inverse trigonometric functions, one must be careful and set the angle unit to the one required by the problem at hand (degrees, or radians)
  3. To make the trigonometric functions really functions, their range is restricted.
  4. In this calculator arcosine (x) gives results between 0 and 180 degrees (if angle MODE is Degree) or between 0 and Pi radians (if angle MODE is Radian).
  5. The range of results for arcsine(x) and arctangent(x) is between -90 degrees and +90 degrees (if angle MODE Degree) or -Pi/2 and Pi/2 (if angle MODE is Radian)
With this information you should be able to set the angle unit correctly ([MODE][Radian] or [MODE][Degree] ) and interpret the results. If you want to extend the angle to other values, use the periodicity of the trigonometric functions.

Hope it helps

Nov 06, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

Need to know how to obtain the cot,csc, and see in the degree mode and radian mode


Hello,
There are no dedicated keys for these trigonometric functions, for the simple reason that they can be obtained from the tan, sin, and cos by a simple division.
cotangent (x) =1/tan(x) . Do not confuse with the arc tangent tan^(-1)
cosecant (x) = 1/sin(x) . Do not confuse with the arcsine sin^(-1)
secant(x) =1/cos(x) Do not confuse with the arccosine cos^(-10)

If you know how to use the tan, cos, and sin, with angle unit in degrees or radians, then there will not be any problem

If angle unit is degree, any number you give a trigonometric function is interpreted as degree. For instance if mode is in degree , and you calculate cos(PI) do not expect the value -1. You will have the value corresponding to the cosine of of 3.14159 degrees, namely 0.99849715

Now for you if you are interested.
If [MODE] is in degrees you can still enter angles in radians
You use the [2nd][ANGLE] [3: raised r] [ENTeR].
Here is a screen capture to show you more clearly.

fc7187b.jpg
The raised r is obtained by [2nd][ANGLE][3: raised r] [ENTER]

Hope it helps.

Oct 13, 2009 | Texas Instruments TI-83 Plus Calculator

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


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.

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Converting degrees and minutes and seconds to radians


Hello,
With the TI8x/TI8xPlus you can enter an angle in degrees (Angle mode must be set to degrees) and convert it into DMS representation the following way. Exemple
18.675 [2nd][ANGLE][4] [ENTER] gives 18deg 40' 30''
If Angle [MODE] is set to degrees you can enter a number in radians and convert it into degrees. Exemple How many degrees are ther in 1rad ?
[1][2nd][ANGLE][3] display 1 with a small r as superscrit. Pressing [ENTER] yields 57.29577951

To convert 1rad into DMS, takes a little effort but can be done: you have
to convert radians to degrees and the result [ANS] into DMS.

You cannot use an angle written in DMS in any calculation.
But if you want to convert an angle from degrees to radians enter your number and divide by 57.29577951

Hope it helps

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Now I can only count in Degrees and radians


Press the MODE button to enter the Mode menu, and change the angular measure to suit.

Mar 25, 2009 | Texas Instruments TI-83 Plus Calculator

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