Question about Texas Instruments TI-30XA Calculator

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Of course. Just press the INV key before pressing the appropriate trig function key. For example, to calculate the inverse sine, press INV then sin.

Posted on Apr 05, 2011

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Posted on Jan 02, 2017

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The inverse cosine function is defined for arguments from -1 to +1. 6 is outside of this domain, thus the error. Do you get an error if you try the inverse cosine of 0.6, for example?

If you're getting the same error for the inverse tangent, could you post an example?

If you're getting the same error for the inverse tangent, could you post an example?

May 12, 2014 | Casio FX83ES Scientific Calculator

The sine and cosine of an angle have values in the closed interval [-1,1]. That means

When you consider the inverse problem where you want to find the angle whose sine or cosine is known, you must take the values of the sine or cosine in the interval [-1,1]. That is the domain of the functions arc sine and arc cosine. So if you take a value outside the domain [-1,1], and want to calculate the angle to which it belongs, the calculator signals that there a domain error, because there is no angle that answers the question.

Mar 30, 2014 | Office Equipment & Supplies

I suspect that you are confusing things a bit.

The inverse sine, called the arcsine is a function defined in the closed interval [-1,1]. And so is the inverse cosine. Any value outside this interval will give you a non-real result (meaning a complex one).

There are no limitations on the domain of definition of the inverse hyperbolic sine or sinh^-1

If your input value is**allowed to be complex**, the arcsine function gives a complex value. See the screen capture

The inverse sine, called the arcsine is a function defined in the closed interval [-1,1]. And so is the inverse cosine. Any value outside this interval will give you a non-real result (meaning a complex one).

There are no limitations on the domain of definition of the inverse hyperbolic sine or sinh^-1

If your input value is

Mar 17, 2014 | Texas Instruments TI 89 Titanium Graphing...

Enter the value then press 2nd COS.

For example, to calculate the inverse cosine of 0.5, press . 5 2nd COS =

For example, to calculate the inverse cosine of 0.5, press . 5 2nd COS =

Dec 08, 2013 | Texas Instruments TI-30XA Calculator

Does it refuse to do so or does it give an error message?

Three common errors:

Three common errors:

- Not having the correct angle unit.
**Wrong result, No error message** - Confusing reciprocal of sine (1/sin(x) with arc sine (x) ,sin^-1(x). Confusing the reciprocal of cosine, 1/cos(x) with arc cosine (cos^-1(x)).
**Wrong result, No error message** - Taking the argument of the inverse sine and/or inverse cosine functions outside the interval [-1,1].
**This gives a domain error.**

Oct 28, 2013 | Texas Instruments TI-81 Calculator

The sine and cosine function have a range between [-1, 1]. The domain of their inverse functions is [-1,1]. So 20/1 which is 20 is out of the domain of definition of the functions. No limitations for tangent and cotangent.

Oct 22, 2013 | Casio FX-115ES Scientific Calculator

The inverse sine is defined only for numbers in the range [-1, +1].

The sine of a number is at most 1.0. There is no number whose sine is 1.5, which is what you're asking for.

The same applies to the cosine and inverse cosine.

The sine of a number is at most 1.0. There is no number whose sine is 1.5, which is what you're asking for.

The same applies to the cosine and inverse cosine.

Oct 24, 2011 | Casio FX-115ES Scientific 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

Press the SHIFT key before the sin, cos, or tan keys. For example, to calculate the inverse sine of .5 (arcsin(0.5)), press SHIFT sin . 5 ) =

Mar 03, 2011 | Casio FX-115ES Scientific Calculator

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].

However you fed the arc sine function (sin^-1) a vlaue of (25/20.48) and that value is obviously larger outside the [-1,1] domain, hence the DOMAIN error message.

No such domain limitations exist for arc tangent (tan^-1) because the range of the tangent function spans the open interval ]negative infinity to positive infinity[.

However you fed the arc sine function (sin^-1) a vlaue of (25/20.48) and that value is obviously larger outside the [-1,1] domain, hence the DOMAIN error message.

No such domain limitations exist for arc tangent (tan^-1) because the range of the tangent function spans the open interval ]negative infinity to positive infinity[.

Nov 02, 2010 | Texas Instruments TI-84 Plus Silver...

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