Question about Texas Instruments TI-83 Plus Calculator

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Sin cos tan

My textbook states that the solution of tangent 37 is 0.7536, but when I enter TAN 37 ENTER in my calculator it comes up with -.8407712554. Do I have to program it to a certain criteria to get the answer. Any help would be appreciated.

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  • Anonymous Jan 20, 2009

    this **** is hard

  • Anonymous Mar 18, 2014

    tan inverse 0.75

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37 is in degrees. so if your dealing with degrees you need to go to and change the mode. hit the mode button next to the 2nd button and go down to and change it from degree from radian by going to degree and hitting enter

Posted on Jan 09, 2008

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Thank you!!

Posted on Mar 14, 2008

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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
3_23_2012_2_09_39_pm.jpg
3_23_2012_2_17_00_pm.jpg



y=arc tan x
3_23_2012_2_18_20_pm.jpg
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  4. And then hit ENTER

To find the inverse tangent:

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this will give you the angle that yields that tangent value.

You might have to switch your calculator from radian to degrees or from degrees to radians to get the expected result. To do that:

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Mar 01, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

I have a TI 84 plus silver ed. I am trying to find out the inverse tangent. How do I get the answer in degrees?


Hello,
The inverse tangent or arctangent shares the ame key as tan. You access it by pressing [2nd][tan] number [)] [ENTER]. Be warned! The angle value displayed is the same as the one set in [MODE].
Hope it helps

Oct 15, 2009 | Texas Instruments TI-84 Plus Silver...

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How to I use the tangent mode on my texas instrument calculator. For instant; if I want to solve 14720/tan 2 degrees.


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

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

1 Answer

Sin,cos,tan answers arent coming out right. They are off by a couple of numbers Ex: tan 36.7 enter 7 divided by 60 then add 36 and i get .729658205 instead of .74537703


Hello,
What you deplore is perfectly normal.
7/60= 0.1166666667 the last 6 has been rounded to 7 (result is periodic)
36 + 7/60= 36.1166666667
36.7 -36-7/60=0.8166666667
tan(36 + 7/60) = 0.7296582051

Compare the tangents of two close numbers
tan(36.7)= 0.7453770282
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True, the precision of calculator is limited, but the number of digits it can display has a lot more precision that real-life problems really require.

Hope it helps.




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1 Answer

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Press SHIFT [ATAN] whatever ENTER

ATAN stands for arctangent (inverse tangent, tan^(-1)) and is the shifted function of the tangent key.

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