Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

# I am doing math, and would like to know how to

I am doing math and would like to know how to change the mode of the Sine Cosine and Tangent buttons along with their secondary buttons.

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• Texas Instru... Master

1. Press the MODE button
2. On the third line of the configuration screen either Radian or Degree is highlighted.
3. Use Left or Right arrow to highlight the angle unit you want and press ENTER
4. If you do not have any other configuration option to change, just press 2ND MODE to QUIT the setup screen.

Posted on May 15, 2010

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No matter. I am willing to presume that if you are asking about these keys that is because you have not seen the relevant functions yet in your Math courses. One day or another (soon) you will know about them, and I will not go into explaining what they are or what they are used for. (Awfully SORRY)
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Since you are familiar with sines, cosines, you know that their ranges (interval of values) varies from -1 to 1. The inverse functions of sine and cosine tkae their values in that very domain, [-1,1].
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### I am doing math, and would like to know how to change the mode of the Sine, Cosine, and Tangent buttons, along with their secondary buttons.

I am not sure what you mean. The only "mode" I can think of as regards these functions (trigonometric and inverse trigonometric) is the angle unit.
• Press [MODE] key.
• In Mode set up screen, use arrow keys to move highlight to degree or radian (whichever unit your problem requires).
• Use the arrows to move cursor to 3rd line to highlight {degree} and press [ENTER] or radian and [ENTER].
• Here is a screen capture (Do not worry if you do not have exactly the same screen as in the screen picture)

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then hit enter...  :)

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Put the calculator in radian mode and it will graph trig functions just fine. If you don't know how to change it to radians, then go to mode and cursor over to select radians. I am assuming you know where the sine, cosine, tangent, etc. keys are.

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