Texas Instruments TI-89 Calculator Logo

Related Topics:

A
Anonymous Posted on Sep 30, 2012

How do I get my calculator to give answers in terms of pi

1 Answer

vedant

Level 2:

An expert who has achieved level 2 by getting 100 points

MVP:

An expert that got 5 achievements.

New Friend:

An expert that has 1 follower.

Hot-Shot:

An expert who has answered 20 questions.

  • Expert 33 Answers
  • Posted on Oct 30, 2018
vedant
Expert
Level 2:

An expert who has achieved level 2 by getting 100 points

MVP:

An expert that got 5 achievements.

New Friend:

An expert that has 1 follower.

Hot-Shot:

An expert who has answered 20 questions.

Joined: Oct 06, 2018
Answers
33
Questions
0
Helped
85574
Points
123

In the short time now i want to know the function about the basic input out function and by the help f this site https://windowsclassroom.com/how-to-enter-bios-windows-10 i will know because i start now this site and its so easy for the all.

2 Related Answers

k24674

  • 8093 Answers
  • Posted on Sep 12, 2011

SOURCE: I can't get my TI-nspire

The TI Nspire has two calculation modes: Auto and Approximate. In Auto mode the calculator will attempt to do exact calculations. If that is not possible then the results are displayed as decimals. The non CAS version does not do symbolic manipulations, only the CAS version can do that.
However if you are actually using the CAS calculator, then go to the settings ( Settings>General ) and change the settings for the calculatoion mode to EXACT. The Non Cas does not have that third choice.

Ad

k24674

  • 8093 Answers
  • Posted on Sep 20, 2011

SOURCE: when i put in integrals

You are not using the right units. The integrals of functions involving angles (trigonometric functions) that you find in tables and other refrerences are valid only for the natural angle unit which is the radian. With any other angle unit (degree, gradian) there is a scale factor to take into account. That is the factor yoy are complaining about.

If it were not the case, the same integral will have two different values depending on the unit you use: and that cannot be.

If you want the calculator to give you the standard integrals in reference tables you must set the default angle unit to be radian.

Let x_deg be an angle in degrees and x_rad the corresponding value in radians.
180 deg=Pi rad
x_deg/180=x_rad/Pi
x_deg =(180 deg/PI)*x_rad
calculating the differentials of bot sides you obtain
dx_deg= (180/Pi) dx_rad

Similarly, with grads
dx_gr=(200/Pi)*dx_rad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1helpful
1answer

Have a texet fx1500 scientific calculator. when I press pi button, it gives the answer 3 instead od 3.14. why?

Do you have the display set to give you any digits after the decimal point? What do you get when you multiply pi by 100: 300 or 314?
0helpful
1answer

When i put in integrals to solve, the ti89 gives me an answer with pi / a degree(normally 180) i do not need pi anywhere in my answer. how do i change this?

You are not using the right units. The integrals of functions involving angles (trigonometric functions) that you find in tables and other refrerences are valid only for the natural angle unit which is the radian. With any other angle unit (degree, gradian) there is a scale factor to take into account. That is the factor yoy are complaining about.

If it were not the case, the same integral will have two different values depending on the unit you use: and that cannot be.

If you want the calculator to give you the standard integrals in reference tables you must set the default angle unit to be radian.

Let x_deg be an angle in degrees and x_rad the corresponding value in radians.
180 deg=Pi rad
x_deg/180=x_rad/Pi
x_deg =(180 deg/PI)*x_rad
calculating the differentials of bot sides you obtain
dx_deg= (180/Pi) dx_rad

Similarly, with grads
dx_gr=(200/Pi)*dx_rad
1helpful
1answer

I can get pi, but then when i need to multiply it by a number (example: 6), It just gives me that number, with the pi sign beside it. it wont give me an answer.

When in MathIO the calculator displays pi symbolically. If you want the numerical value of an expression, press [SHIFT][=], not just [=]. You can try pressing the [SD] key to toggle between fraction`/radical to decimal. You can also configure the calculator to use LineIO by default.
0helpful
1answer

I'm trying to find the inverse cotangent of -2/3, and whenever I input Tangent^-1 (1/(-2/3)) it gives me .98279, however for homework we are using this software called Hawkes learning Center and it gives...

Aren't you getting -.98279 (a negative value)?

The tangent function (and the cotangent) are periodic, with a period of pi. The calculator will give you a result from -pi/2 to pi/2, while the Hawkes apparently is giving you a result from 0 to pi. The difference between 2.1588 and -.98279 is pi.

To make the calculator's result match Hawkes, if the (co)tangent gives you a negative value, simply add pi to it.
37helpful
1answer

On my TI 83 plus my sine cosine and tangent buttons are giving incorrect answers.

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
1helpful
1answer

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
0helpful
1answer

Different answer two different calculators ti-81 and ti89

I had the same problem when I got my first 89, even though it's really a feature and not a problem.

Press the diamond key then enter to get your answer, and it will give you the decimal answer instead of the exact answer like you have been getting. Hope this helps...
6helpful
2answers

Different answer fro my TI-89 AND MY tI-81

Hello,
Your TI81 can only perform numerical calculation: It always give uour numbers. The TI89, a more sophisticated calculator, can of course do numerical calculation, BUT ALSO symbolic ones. You ask it for the derivative of sin(x) and it will give you cos(x).
Anyway, if you want a decimal result for you calculation above one of the numbers must have a decimal point (instead of writing 2PI write 2.PI.

The TI 89 can do exact calculations. But if you want approximate results any number in the sequence of operations must have the mark of a decimal. Numbers without decimal marks are considered integers, Integer numbers with a decimal mark are treated as floating point numbers ( meaning decimal).

Hope it clarifies things for you.
0helpful
1answer

Radian mode does not work properly

-1E-13 is a very small number. When doing this kind of a problem you can regard 1E-13 as 0.

Remember that pi is an irrational number. It is only estimated on your calculator. I just played around with a TI-83 and found the following answers:

cos(pi/2) = 0
cos(2*pi + pi/2) = 0
cos(4*pi + pi/2) = 1E-13
cos(20*pi + pi/2) = -1E-13

As you know, that correct answer to each of these is 0. The calculator gives non-zero answers because some very small errors are accumulating. There is nothing wrong with your calculator.
Not finding what you are looking for?

9,069 views

Ask a Question

Usually answered in minutes!

Top Texas Instruments Office Equipment & Supplies Experts

k24674

Level 3 Expert

8093 Answers

Jerry Naidoo

Level 2 Expert

152 Answers

Paul Bade

Level 3 Expert

1818 Answers

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

Answer questions

Manuals & User Guides

Loading...