Question about Texas Instruments TI-83 Plus Calculator

Make sure your calculator is in degrees.

Press Mode, then choose move down to where you have a choice between Degree and Radian. Highlight Degree.

Second-Mode to Quit. You should be set.

Posted on Oct 06, 2009

The answer of tan(212.21/18.41) is 0.20394105 in degrees and -1.7015991 in rad

try to do it in the computer calc and you will see the real answer

Posted on Oct 07, 2009

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Posted on Jan 02, 2017

The computer math section has deliberate errors to be compliant with the IEEE standard. This happened because there was an error in the early 8087 chip. However that error would not be that big, generally never noticeable.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0CC8QFjAC&url=https%3A%2F%2Fwww.math.wisc.edu%2F~keisler%2Fappendix-c.pdf&ei=oSL1VKvdCpe2yASA3YD4Cw&usg=AFQjCNFCrr2orPf62sDy5LZBhgrmrw4_nA&bvm=bv.87269000,d.aWw

Inverse Trigonometric Calculator get angle from sine cosine or tan arcsine...

How do get 625 tan Yahoo Answers

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0CC8QFjAC&url=https%3A%2F%2Fwww.math.wisc.edu%2F~keisler%2Fappendix-c.pdf&ei=oSL1VKvdCpe2yASA3YD4Cw&usg=AFQjCNFCrr2orPf62sDy5LZBhgrmrw4_nA&bvm=bv.87269000,d.aWw

Inverse Trigonometric Calculator get angle from sine cosine or tan arcsine...

How do get 625 tan Yahoo Answers

Mar 02, 2015 | Office Equipment & Supplies

It's a quirk of notation. When a book says tan^2(x), it actually means (tan(x))^2. Only the trigonometric and hyperbolic functions seem to get written this way. If one wants the square of a logarithm, for example, one doesn't write log^2(x).

The short answer: if you want tan^2(55), calculate tan(55) then square it.

The short answer: if you want tan^2(55), calculate tan(55) then square it.

Oct 15, 2014 | Casio Office Equipment & Supplies

Use parentheses. If you do not have parentheses (doubtful), calculate first SQRT(2)/2 =

Result is displayed and saved in ANS memory. Now calculate the arc tan of ANS.

Result is displayed and saved in ANS memory. Now calculate the arc tan of ANS.

Apr 04, 2014 | Texas Instruments TI-30XA Calculator

you might want to post this in a different section to get an answer

Aug 17, 2012 | Cars & Trucks

You can see on the images below graphs of the function **y=tan x** and **y=arc tan x** and calculations for your problem

**y=tan x**

y=arc tan x

y=arc tan x

Mar 18, 2012 | Texas Instruments TI-Nspire Graphic...

Let's start with a little background.

The cot(x) is also known as the cotangent(x) and it equals 1/tan(x) which equals cos(x)/sin(x). I'm showing these formulas because your calculator may not have a cot button but it will probably have buttons for tan, cos, and sin.

Your calculator may also have buttons for tan-1, cos-1 and sin-1. These are the inverse functions for tan, cos, and sin. If you enter a number and then push the tan-1 button, the result is the angle whose tangent is the entered number. For example, it you enter 1 and push the tan-1 button the answer will be 45 deg because tan (45 deg) = 1.

Now let's look at the problem, cot(x) = -0.6.

The first thing we need to know is do you want the answer in degrees or radians? Your calculator will have both modes. The default mode when you first turn it on is probably degrees. If this problem is in radians you will need to change the mode of your calculator over to radians before we start.

If cot(x) = -0.6, then tan(x) = 1/-0.6 from the formula I showed in the background section.

This means tan(x) = -1.6666666...

Now we just enter -1.66666667 and hit the tan-1 button to get the answer.

If we're operating in radians the answer is -1.0307 radians.

If we're operating in degrees the answer is -59.036 deg.

I hope this helps you out.

Dec 06, 2011 | SoftMath Algebrator - Algebra Homework...

You would enter 14720*2 tan make sure you press = sign after and get your answer.

14720*2 TAN = 514.034

14720*2 TAN = 514.034

Oct 11, 2009 | Texas Instruments TI-30XA Calculator

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

(easy to remember, 360deg in a circle, 2pi radians in a circle)

Good luck

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

I don't have a Cot button but Cot x = 1/Tan x so enter

1/Tan 78 = 0.212556 etc if you have a fraction button you can write it that way too:

1 frac button Tan 78 = 0.212556 etc

1/Tan 78 = 0.212556 etc if you have a fraction button you can write it that way too:

1 frac button Tan 78 = 0.212556 etc

Jun 16, 2008 | Sharp EL-531VB Calculator

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

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

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