Question about Office Equipment & Supplies

When ever i press sin^-1, and type in a number, the answer is always "domain error" on my ti 30x iis, how can I fix this problem?

This also happens for cos^-1 and tan^-1

Posted by on

• Level 3:

An expert who has achieved level 3 by getting 1000 points

Superstar:

An expert that got 20 achievements.

All-Star:

An expert that got 10 achievements.

MVP:

An expert that got 5 achievements.

• Office Equip... Master

Not quite true. (Explanation at the end)
The sine and cosine of an angle have values in the closed interval [-1,1]. That means whatever the value of the angle, its sine or its cosine cannot be less than -1 or greater than 1.
When you consider the inverse problem where you want to find the angle whose sine or cosine is known, you must take the values of the sine or cosine in the interval [-1,1]. That is the domain of the functions arc sine and arc cosine. So if you take a value outside the domain [-1,1], and want to calculate the angle to which it belongs, the calculator signals that there a domain error, because there is no angle that answers the question. Limit the arguments of the sin^-1 and cos^-1 to values in [-1,1]
For the inverses of arc tangent and arc cotangent functions there is no domain limitation because the range of tangent and cotangent is the whole real line ]-infinity, +infinity[.

Posted on Mar 30, 2014

• k24674 Mar 30, 2014

OOPS For the inverses of arc tangent and arc cotangent , SHOULD BE For the arc tangent and arc cotangent

×

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

here are the steps in changing it from radian to degrees
1. turn on your TI-83 plus
2. press the MODE button near the top of your calculator
3.go down to options and move the highlight from radian to degree, press enter and clear
you're good to go

Posted on Nov 09, 2007

for function = (sin,cos,tan,sec,cosec,cotan)
arc(function) = function^-1, calculated in the first quadrant for simplicity(0-pi/2) (0-90deg), as all functions repeat circularly
just another method of notation

http://www.mathwords.com/t/tangent_inverse.htm

Posted on Jun 21, 2008

SOURCE: Tan Cos and Sin errors

go to:

mode
select DEGREE rather than RADIAN three lines down.

Posted on Jan 21, 2009

Hello,
It may be due to the angle unit used. You can have angles in degrees, in radians, and in grads. You should set the default angle unit to waht you problem calls for.
To set degree as default SHIFT MODE 3
To set radians as default SHIFT MODE 4
To set grads as default SHIFT MODE 5

The values of angles calculated by the inverse trigonometric functions are in the default unit that is set . This may be the source of the wrong answers that you get.

Hope it helps.

Posted on Sep 17, 2009

The trig functions depend on the angular mode. Make sure you have the proper one set.

Posted on Aug 16, 2012

×

my-video-file.mp4

×

Related Questions:

My TI-30X IIS is stuck on "fix"

You can use FIX notation display but specify the number of digits you retain. Press [2nd][FIX] and select the number of digits after the decimal mark (from 0 to 9). However if you do you will constantly have many unnecessary 0.
You can set the display to FLOAT.
To do so, press [2nd][SCI/ENG]. From the three choices you have select FLOAT.

Apr 19, 2012 | Texas Instruments TI-30X-IISTK Scientific...

For calculator TI-30X II S My solutions only come out in the tenth's place if its a decimal. for example: 0.123 will only show as 0.1

Press 2nd [FIX] to bring up the display menu. You can select the number of digits after the decimal point, or "F" to select the floating decimal display.

Apr 28, 2011 | Texas Instruments TI-30X-IISTK Scientific...

Using inverse cosign and inverse sin always bring up domain errrors. For example, I used the equation COS -1(185 / -20) . And it always came up with domain error. This is the same equation my teacher gave...

Make sure your calculator is in degree mode.
It is probably in radian mode so it can't calculate the inverse sin.
To change this, go to Mode -> Deg.
Hope this helps, cheers!

Mar 06, 2011 | Texas Instruments TI-30 XIIS Calculator

I get ERR:DOMAIN every time I enter an inverse trig function

Is your Ti83 plus in degree mode. You can change to radians by pressing the MODE key, and sliding down 2 more positions, and press the ENTER key. Because you got this error your principle value for x and y should be examined. Generally you really should be in radian mode when working with arcsin (aka. sin^-1), and arccos. You probably weren't using arctan because, you would have never gotten this error message due to the fact it goes on forever. And this way your answers for y= arcsin(x), or arccos(x) will be on the x axis, and domains at 0, pi/2, and pi.

You can work in degree mode but, if the number you place in the brackets of your arc sin or arc cos function is larger than 1 or smaller than -1 you will get a ERR:DOMAIN. Using the arctan or (aka. inverse tan) function in the degree mode can be used for computing endless waves, or as an angles that are usually in brackets of cosine or sine. Example: cos(arctan(Beta). This functions that y to never be greater than 1 or, less than 0. Example: sin(arctan(angle). This functions that y to never be less than -1 or, greater than 1.

I hope this answers your question to why you got this error and, helps you to decide on what the correct mode setting should be.

Dec 17, 2010 | Texas Instruments TI-83 Plus Calculator

Standard Percentages on TI-30X IIS

You must enter 100+10%100 or 100+10%(100). This will give you the correct answer of 110.

Nov 25, 2009 | Texas Instruments TI-30X-IISTK Scientific...

Standard Deviation

Press 2ND [CSR] to clear the stat data.

For each data point, enter the number followed by SIGMA+

If you have grouped data, enter the number followed by 2ND [FRQ] followed by the frequency then SIGMA+

Press 2ND [sigma x n] for the population standard deviation or 2ND [sigma x n-1] for the sample standard deviation.

May 25, 2009 | Texas Instruments TI-30X-IISTK Scientific...

Can't take inverse of sin

The inverse sine is only defined for values in the range [-1..+1]. Arguments outside this range will produce domain errors.

Apr 14, 2009 | Texas Instruments TI-83 Plus Calculator

I just bought a texas instruments TI-30X IIS Calculator. How do I reduced improper fractions with no mixed numbers. What keys do I press. For example: 3 6/8 X 7 1/3 = ? How do I find the answer?

if you want to use your calc for this you would have to put it in as the operations to change the mixed to improper fraction i.e. input exactly as "((8*3)+6)*((3*7)+1)="  remember?  take denominator times whole number plus numerator and put over denominator to convert from mixed to improper... hope this helps

Apr 08, 2009 | Texas Instruments TI-30X-IISTK Scientific...

"Err: Domain"

I think you may find arcsin(x) is equivalent in older nomenclature to sin^-1 (x)...ie use the "2nd" and the SIN key instead of typing arcsin.
eg. arcsin(0.5) is 30 degrees is the same as sin^-1(0.5)
The ^-1 does not mean reciprocal, but "the angle whose sin is." Here the minus one indicates a kind of inverse operation. The word arcsin indicates that same inverse.

Mar 23, 2009 | Texas Instruments TI-89 Calculator

How do you enter negative numbers on a TI-30X iis calculater?

On the bottom of the calculator near the zero and the enter key it has the symbol (-) that is a negative number symbol

Nov 22, 2008 | Texas Instruments TI-30XA Calculator

Open Questions:

Related Topics:

317 people viewed this question

Level 3 Expert

Level 3 Expert