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

I bought the TI-84 Plus calculator and I am having problem to solve problems with Sine angles foe instance the Sine of 40 angle this calculatir gives me . 8509035245 and this is not the corect answer. Please help me how to get the sine of an angle. Julian

Julian_melgarejo@yahoo.com

Make sure that your mode is in degree, not radian. YOu can change it by simply press mode and move down to the degree selection and press enter.

Posted on Mar 18, 2009

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Posted on Mar 06, 2009

The cosecant of an angle is one divided by the sine of the angle. As an example, to calculate csc(2), press SIN 2 ) x^-1 or 1 / SIN 2 =

Nov 04, 2012 | Texas Instruments TI-84 Plus Silver...

If the angle unit is set to degrees and you use the standard window dimensions (Xmin=-10, Xmax=10) then all you will see is a straight line: Between 0 and 10 degrees, the sine is approximately equal to 0 and the cosine is about 1.

To see the features of the trigonometric functions you must do one of the following

To see the features of the trigonometric functions you must do one of the following

- Set angle to degree but set window dimensions to span the domain -180 to 180 or larger.
- Set windows dimensions to the standard -10, 10 range but set angle degree to radians

May 12, 2012 | Texas Instruments TI-84 Plus Calculator

You have to go to **DEG**ree mode. See captured image

Feb 25, 2012 | Texas Instruments TI-84 Plus Silver...

When you graph functions y=f(x), even if f(x) is a trigonometric function, the default independent variable is x. You will have to use the variable theta only when drawing polar functions.

To draw the sine and cosine or any other trigonometric function set the angle unit to radians and window zoom to standard. If your angle unit is degree you must modify the x-window range to, say, multiples of 180 degrees. Other than that there is nothing special to do. The functions are well-behaved and should graph nicely. You will alos get a better view if Ymin is about -1.2 and Ymax is about 1.2

To draw the sine and cosine or any other trigonometric function set the angle unit to radians and window zoom to standard. If your angle unit is degree you must modify the x-window range to, say, multiples of 180 degrees. Other than that there is nothing special to do. The functions are well-behaved and should graph nicely. You will alos get a better view if Ymin is about -1.2 and Ymax is about 1.2

May 22, 2011 | Texas Instruments TI-84 Plus Calculator

The inverse sine and cosine equations mean "angle who's sine/cosine is:" The bounds of the arguments for these functions must be between 1 and -1, the maximum and minimum values of the sine and cosine functions, because no angle can have a sine or cosine that is greater than 1 or smaller than -1. Also it should be noted that the inverse sine/cosine function is not the same as 1/sine or 1/cosine, although the symbol makes it look like that.

Mar 08, 2011 | Texas Instruments TI-84 Plus Calculator

While the domain of the sine function is the whole of the real line, it range spans the interval [-1,1]. In other words the sine of an arbitrary angle is imperatively somewhere in the closed interval [-1,1].

So when you want to find the arc sine corresponding to a given value of a sine function, you cannot give as argument to the arc sine [sin^-1] a value that lies outside the interval [-1,1].

For your case, the argument is 60 and it is outside the permitted domain [-1,1]. That is why the calculator protests by signaling a domain error.

So when you want to find the arc sine corresponding to a given value of a sine function, you cannot give as argument to the arc sine [sin^-1] a value that lies outside the interval [-1,1].

For your case, the argument is 60 and it is outside the permitted domain [-1,1]. That is why the calculator protests by signaling a domain error.

Oct 28, 2010 | Texas Instruments TI-84 Plus Calculator

What is so surprising? The sine and cosine functions have ranges that span the closed interval [-1,1]. As to the tangent function, its range is the the whole real line.

This being said, you should keep in mind that there are three angle units: the degree, the radian, and the grad.

When you want to calculate the sine, cosine, or tangent of a number, that number is not just a number. It is an angle, and as an angle it has a unit.

For this reason a calculator generally has two angle units defined (degree and radian), and possibly the grad. BEFORE calculating any trigonometric function you must ascertain that the angle is in the correct unit.

Clearly, in the problem you are trying to solve angle values are given in degrees, but your calculator is configured to interpret angles values in radians.

To set the default angle unit to degree press [MODE] , then press down arrow twice to reach the line (radian, degree). Highlight the word degree and press [ENTER] to set the default angle unit to degree.

Unfortunately the TI 8xPLUS family of calculators does not have a status bar on screen to remind you of the modes, and if you do not remember to check the current unit you get errors (at least unexpected results).

However, there is a way to avoid the errors and that is to enter the unit explicitly after the angle value. To do that you press [2nd][APPS] to open the (ANGLE) menu list. Try it.

This being said, you should keep in mind that there are three angle units: the degree, the radian, and the grad.

When you want to calculate the sine, cosine, or tangent of a number, that number is not just a number. It is an angle, and as an angle it has a unit.

For this reason a calculator generally has two angle units defined (degree and radian), and possibly the grad. BEFORE calculating any trigonometric function you must ascertain that the angle is in the correct unit.

Clearly, in the problem you are trying to solve angle values are given in degrees, but your calculator is configured to interpret angles values in radians.

To set the default angle unit to degree press [MODE] , then press down arrow twice to reach the line (radian, degree). Highlight the word degree and press [ENTER] to set the default angle unit to degree.

Unfortunately the TI 8xPLUS family of calculators does not have a status bar on screen to remind you of the modes, and if you do not remember to check the current unit you get errors (at least unexpected results).

However, there is a way to avoid the errors and that is to enter the unit explicitly after the angle value. To do that you press [2nd][APPS] to open the (ANGLE) menu list. Try it.

- First item in list is the degree symbol, a raised 0
- 2nd is the minute, an apostrophe
- 3rd is radian, a raised r

Jan 21, 2010 | Texas Instruments TI-84 Plus Silver...

Hi,

It is simple.

It is simple.

- First you verify that the angle unit of the calculator is the same as the angle unit of the nagle the sine of which you want to calculate.
- To verify that, press [MODE]. On the screen that is diplayed, on the line Angle, make sure that the angle unit is the same as your angle.
- If it is not, you use the left or right arrow to highlight Radian or Degree and press [ENTER].
- Press [2nd][QUIT] to go back to the main calculator screen.
- You press the key [SIN].
- On the screen appears
**sin(**. After the parenthesis, type in the angle measure and close right parenthesis. - Press [ENTER]. The value is displayed on the next line.

Nov 10, 2009 | Texas Instruments TI-84 Plus Calculator

try inputting using brackets (sin(angle))^-1 or 1/(sin(angle))

Jul 27, 2009 | Texas Instruments TI-84 Plus Calculator

Put the calculator in radian mode. Find the sine of the angle (sin(angle)), invert the result (1/x or x^(-1)). csc = 1 / sin

Jan 27, 2007 | Texas Instruments TI-86 Calculator

Jul 21, 2014 | Texas Instruments TI-84 Plus Silver...

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In need to find and angle based on its sine using Basic - a computer language.

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