Question about Texas Instruments TI-83 Plus Calculator

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Cos^2 what do you type in to get cos squared? I can;t find it on my ti-83 plus

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Cos(number)^2


(or use the square button)

Posted on Feb 20, 2009

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How to graph the negative cosine on the graphing calculator texaz instruments TI 83 plus


do you mean (-)Cosine(X), or arcCosine(X)

The first is graphed as "-cos(X" (no quotes)
The second as "cos-1(x" (press 2nd Cos to access arcCosine)

Aug 07, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

How do i work out the Sin, Cos, and Tan on the TI-83 plus?


First, make sure you have the appropriate angular mode set. To change the angular mode, press MODE, use the arrow keys to highlight either "RADIAN" or "DEGREE" on the third line, press ENTER, then press 2ND [QUIT].

Press the appropriate sin, cos, or tan key (two rows above the 7, 8, and 9 keys), enter the angle, close the parenthesis, and press ENTER. For example, to calculate the sin of 2.1, press
SIN 2 . 1 ) ENTER

Jun 07, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

How do I cos square something im not getting the correct answer doing this.


Take the cosine of the number (cos key), square the result (x2 key). Make sure the calculator is in DEG and not RAD mode. Most elementary trig is conducted in degrees, not radians.

Apr 25, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

How do you plug h(x)=(1/2x-2) squared into a ti 83 calculator and it will graph the function for you


Press on the Y= button (top left) and type (1/2x-2)^2 in the y0 field. Finally, press the graph button.

Feb 16, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

I ask my TI-83 Plus to calculate (-64)^(3/2) The TI-83 Plus says the answer is -512i, but I think the answer should be 512i. Is the calculator wrong or am I?


You're both right, in a way. (-64)^3 is -262144. The square root of that is +/- 512i. Take your choice as to the sign.

For what it's worth, the TI-84, TI-86, TI-89, and the HP 50g all go with the negative value.

Jan 24, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

How do I graph parabolas?


Parabolas are forms of the base equation X^2. So press the [Y=] key, and then type in the variation of x squared that you want

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

1 Answer

Cos A + 4.37/7.25 I cannot figure how to solve


Here's how in 4 easy steps (I substituted "A" for "X", my more favorite variable.):

1.) Set calculator to "Degree"
2.) Given-- (cos( X))
3.) Given--(4.37/7.25)==> (437/725)
4.) Add--(cos( X)+ (437/725)

Apr 15, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

TI-83 Plus No Longer Squares Correctly


when you type -2 imagine your calculator doing the equation: -1 x 2. The - sign actually stands for a -1 so when you do -2 squared your calculator is simply following order of operations. It first squares the 2 making it 4, then it multiplies the negative making it -4. In order to get around this you must use parenthese. (-2)^2.

Hope this helped

Nov 20, 2008 | Texas Instruments TI-83 Plus Silver...

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

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