Question about Texas Instruments TI-89 Calculator

1 Answer

SIN COS TAN

I dont understand whats wrong with my function buttons. When I type in for example sin(4) and press enter, it shows the same thing "sin(4)", the same for cos and tan!!! im going crazy here!!!!!!!!!!!!!!

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers

The answer that you have received in actuality is correct. However, it is in exact form when the answer that you were looking for was an approximation (decimal form) answer. To achieve this all you have to do is hit the alpha button (the yellow button with a diamond in the center) and then enter which will give you your desired answer :-)

Posted on Jan 15, 2008

Ad

1 Suggested Answer

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Inputting inequality signs in equations on Y= graphing menu.


Choose one of the inequality type graphs

casio image 1-kiqbpyn3hgcftjnsgpwgpmsp-5-0.png by pressing F3 Type.casio image 2-kiqbpyn3hgcftjnsgpwgpmsp-5-1.png

Press F6 for the arrow on the right, you will get the other types
casio image 3-kiqbpyn3hgcftjnsgpwgpmsp-5-3.png

For example press F1 to select the Y greater than type graph.casio image 4-kiqbpyn3hgcftjnsgpwgpmsp-5-6.png

Notice that on the top line Graph Func: Y>. From now on all the graphs you will draw will be Y> some function in X.
Start entering the function. As you start the screen will show Y1>casio image 5-kiqbpyn3hgcftjnsgpwgpmsp-5-10.png

Enter the function for example sin(X^2). Use the X, theta, T to input the X variable.casio image 6-kiqbpyn3hgcftjnsgpwgpmsp-5-15.png

Press the EXE key to complete the function line. The screen will look like on the following screen grabcasio image 7-kiqbpyn3hgcftjnsgpwgpmsp-5-21.png
Press the F6 key Draw to get your graph and the shaded region, as on the following picture:casio image 8-kiqbpyn3hgcftjnsgpwgpmsp-5-28.png



casio image 10-kiqbpyn3hgcftjnsgpwgpmsp-5-45.png

Jun 22, 2017 | Casio FX-9750GII Graphing Calculator

1 Answer

When i try to graph a function the calulator shows "undefined variable" what should i do?


When you are entering the expression, do not use implied multiplication. For example if your expression contains x times sin(X), enter it as X*SIN(X), otherwise the calculator will look for a function XSIN and will not find it, giving you the error message. No need to enter the explicit multiplication sign if you have a number to the left of the function. Also be wary of entering X3 for 3 times X.

Apr 13, 2011 | Texas Instruments TI-89 Calculator

1 Answer

I dont know how to enter in a degree and get its COS, TAN, SIN ect.. Can anyone help me out with this.


Press the SIN, COS, or TAN key, type in the angle, and press ENTER. For example, to calculate the sine of 45 degrees, press SIN 4 5 ENTER

Make sure you have the angular mode set to degrees. It's the third line on the mode screen, which you get by pressing the MODE key.

Jan 30, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

What are the parts of casio calculator


[email protected] My manual is 75 pages. I can email it to you. Please put Casio FX-115ES as the subject. Awaiting your response.

fx-115ES User's Guide
About this Manual
• The MATH mark indicates an example that uses Math format,
while the LINE mark indicates Linear format. For details about
input/output formats, see "Specifying the Input/Output Format".
• Keycap markings indicate what a key inputs or what function it
performs.
Example: 1, 2, +, -, !, A, etc.
• Pressing the 1 or S key followed by a second key performs
the alternate function of the second key. The alternate function is
indicated by the text printed above the key.
• The following shows what the different colors of the alternate
function key text mean.
If key marking
text is this color: It means this:
Yellow
Press 1 and then the key to access
the applicable function.
Red
Press S and then the key to input the
applicable variable, constant, or symbol.
Purple (or enclosed Enter the CMPLX Mode to access the
in purple brackets) function.
Green (or enclosed Enter the BASE-N Mode to access the
in green brackets) function.
• The following shows an example of how an alternate function
operation is represented in this User's Guide.
Example:1s(sin-1)1=
Indicates the function that is accessed by the key
operation (1s) before it. Note that this is not part
of the actual key operation you perform.
sin-1{D}
Keycap function s
Alternate function

Jan 19, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

Hi, I recently purchased a ti 89 calculator from a friend and I am having the following problem: The calculator will not evaluate trig functions. For example, if I type Sin(Pie/4) and hit enter, the...


The calculator is set up to produce exact results. If you want the expression to be evaluated put a decimal mark at the end of the 4.
to making 4 a floating point number instead of integer.
Alternatively, press the [MODE] key. Scroll down through the pages of options until you reach the line labeled Exact/Approx. When cursor is on that line, use the right arrow key to open the menu. Select [3:Approximate]. Press [ENTER] to save.

Aug 25, 2010 | Texas Instruments TI-89 Calculator

2 Answers

How do you use the sin-1


You would press on the SIN key, "sin(" should come on the display, then enter the value, for example 3.5 or -1 so that the display shows

sin(3,5) or sin(-1) for example.

remember to close the sin with the ) on the end.
sin(-1) = -0.841470985

Feb 16, 2010 | Texas Instruments TI-30XA Calculator

1 Answer

How do you plot -0.5+sin(x-0.25PI)


Hi,
  1. First clean the calculator configuration to prevent errors. Press [2nd][STATPLOT][4:PlotsOff][ENTER]. Calculator displays Done.
  2. Press [Y=] to open the function editor.
  3. On line Y1= type in the expression
[SIN] [X,T,theta,n] - [2nd] [PI] /4 [)] - 1/2 [ENTER].
If you do not like PI/4 replace it with 0.25 * PI. If you do not like 1/2 use 0.5. It does not make any difference to the calculator.

d0c2dea.jpg
This is what you get.
2fdee22.jpg
Since the sine function varies between -1 and 1, no need to have the window Y values too large. Change the Window dimensions.

b03ee4f.jpg
Here is what you get now.

79eb0db.jpg
Do not worry if you do not see the labels x and y, one has to configure the calculator to show them. This should not be your concern right now.

Hope it helps.

Nov 10, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

How to use the cosine,tangent etc functions of calculator fx-82ES plus


Hello,
1.Set the correct angle unit required by your problem: degrees, radians, or grads. [SHIFT][MODE] [3:deg] or [4:Rad]

2. Press the key for the function COS, SIN, or TAN
[COS] displays Cos(

3.Enter the angle 12 deg Screen shows cos(12
Close the right parenthesis ) Screen shows cos(12)
4.Press [=] Screen displays 0.9781

If you want the inverse trigonometric functions you access them with arccos [SHIFT] [COS] (cos^-1)
arcsin [SHIFT][SIN] (sin^-1)
actan [SHIFT][TAN] (tan^-1)

You have to know the principal domain for the inverse trigonometric functions (see any book on trigonometry) to understand the results.
Hope it helps.

Nov 05, 2009 | Casio Office Equipment & Supplies

4 Answers

Cosh Squared or Cubed


if you want to square sin(3), press:

(
sin
3
)
)
^
2

Sep 24, 2007 | Texas Instruments TI-89 Calculator

16 Answers

Need help withe the sin, cos, tan problem with ti - 83 plus


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

Feb 17, 2007 | Texas Instruments TI-83 Plus Calculator

Not finding what you are looking for?
Texas Instruments TI-89 Calculator Logo

548 people viewed this question

Ask a Question

Usually answered in minutes!

Top Texas Instruments Office Equipment & Supplies Experts

k24674

Level 3 Expert

8081 Answers

Ekse

Level 3 Expert

13434 Answers

Gene Pitts

Level 2 Expert

159 Answers

Are you a Texas Instruments Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...