Question about Office Equipment & Supplies

Ad

The cosine of 52 degrees is about .6157 . The inverse cosine of .6157 is 52 degrees.

52 degrees is a measure of an angle. .6157 is a distance. The cosine of an angle results in a distance, while the inverse cosine of a distance results in an angle. There is no such thing as the inverse cosine of an angle, just as there is no such thing as the cosine of a distance. It's like asking "How heavy is one hour?"

If you're asking how to calculate a cosine or inverse cosine on your calculator, please specify the make and model of the calculator.

Posted on Jan 08, 2013

Ad

Hi,

a 6ya expert can help you resolve that issue over the phone in a minute or two.

best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).

click here to download the app (for users in the US for now) and get all the help you need.

goodluck!

Posted on Jan 02, 2017

Ad

You can do it; whenever you like. It sill be better to do it, just past Midnight.

Oct 13, 2016 | Office Equipment & Supplies

I wonder if your calculator is set to the wrong units. Your calculator can be set to degrees, radians, or gradians. I assume that you want it set to degrees.

When I click 1 2nd and cos, I will always get 0, because using the 2nd before the cos turns the function into cos^-1 (inverse cosine). The inverse cosine of 1 is 0 because the cosine of 0 is 1.

Good luck.

Let me know if you have any further questions.

Paul

https://education.ti.com/en/us/guidebook/details/en/ADF11FB65B284B6195B0A7E9502784BA/baiiplus

When I click 1 2nd and cos, I will always get 0, because using the 2nd before the cos turns the function into cos^-1 (inverse cosine). The inverse cosine of 1 is 0 because the cosine of 0 is 1.

Good luck.

Let me know if you have any further questions.

Paul

https://education.ti.com/en/us/guidebook/details/en/ADF11FB65B284B6195B0A7E9502784BA/baiiplus

Dec 20, 2015 | Texas Instruments BA II PLUS Financial...

When you calculate the sine cosine and tangent, the results you get are pure numbers: They have no dimensions or units because sin cos and tan are ratios of lengths.

However if you are calculating inverse trigonometric functions the results are angles, and they have units.

Use the mode key to set the angle unit to degree. after you calculate the inverse trigonometric functions, your results will be expressed in the angle unit you set in the configuration. If angle unit is degree you will get decimal degrees. To convert to DMS, use the key to the right of the change sign key (-). It is marked with degree symbol followed by what looks like a a double quote and a single quote.

However if you are calculating inverse trigonometric functions the results are angles, and they have units.

Use the mode key to set the angle unit to degree. after you calculate the inverse trigonometric functions, your results will be expressed in the angle unit you set in the configuration. If angle unit is degree you will get decimal degrees. To convert to DMS, use the key to the right of the change sign key (-). It is marked with degree symbol followed by what looks like a a double quote and a single quote.

Mar 18, 2012 | Office Equipment & Supplies

cos A = adjacent/hypotenuse
= 19/24

A = Inverse cos (19/24) = 37.66

P.S. Also, make sure your calculators settings is in degrees (not radians or grads)

A = Inverse cos (19/24) = 37.66

P.S. Also, make sure your calculators settings is in degrees (not radians or grads)

Jun 24, 2011 | Texas Instruments TI-84 Plus Calculator

You need to use the "SHIFT" button to get the inverse of sin/cos/tan. Also, set the Mode to 1 if you want it in degrees.

Jun 22, 2011 | Casio FX-300MS Calculator

Make sure your calculator is in degree mode.

It is probably in radian mode so it can't calculate the inverse sin.

To change this, go to Mode -> Deg.

Hope this helps, cheers!

It is probably in radian mode so it can't calculate the inverse sin.

To change this, go to Mode -> Deg.

Hope this helps, cheers!

Mar 06, 2011 | Texas Instruments TI-30 XIIS Calculator

The FX-115ES is somewhat different to other calculators you might know. The sequence of keys is more like writing up a calculation in a textbook, whereas for "normal" calculators operations are reversed in some places.

For example, with most calculators you would type 30 [sin] to calculate the sine function of 30 degrees, with the 115ES its [sin] 30 [=].

The 115ES has all the standard trigonometric functions:

For example, with most calculators you would type 30 [sin] to calculate the sine function of 30 degrees, with the 115ES its [sin] 30 [=].

The 115ES has all the standard trigonometric functions:

- Standard functions (sin, cos, tan), type the [sin], [cos] or [tan] key followed by the argument.
- Inverse trigonometric (sin?¹, cos?¹, tan?¹), type [SHIFT][sin], [SHIFT][cos] or [SHIFT][tan] followed by the argument.
- Hyperbolic functions (sinh, cosh, tanh), type [HYP][sin], [HYP][cos], or [HYP][tan] followed by the argument.
- and finally inverse hyperbolic (sinh?¹, cosh?¹, tanh?¹), its [SHIFT][HYP][sin], [SHIFT][HYP][cos], or [SHIFT][HYP][tan] followed by the argument.

Jan 06, 2011 | Casio FX-115ES Scientific Calculator

The trigonometric function evaluations depend on the angle unit you are using: degree, radian, grad

While cos(90 deg)= 0,

cos(90 rad )=cos(90* 180/pi degrees)= -.448073616

ALWAYS CHECK UNITS before using trigonometric functions or their inverse functions.

While cos(90 deg)= 0,

cos(90 rad )=cos(90* 180/pi degrees)= -.448073616

ALWAYS CHECK UNITS before using trigonometric functions or their inverse functions.

May 13, 2010 | Casio FX-7400G Plus Calculator

Hello,

That habit of TI, Casio, and Sharp to label the inverse trigonometric functions with the -1 superscript can cause confusions.

Hope it helps

That habit of TI, Casio, and Sharp to label the inverse trigonometric functions with the -1 superscript can cause confusions.

- The inverse trigonometric functions arcosine, arcsine, and arctangent (labeled by manufacturers as cos^-1, sin^-1, and tan^-1) should not be confused with the other trigonometric functions known as secant(x) =1/cos(x), cosecant(x)=1/sin(x) and cotangent(x) = 1/tan(x).
- To avoid errors in the use of the inverse trigonometric functions, one must be careful and set the angle unit to the one required by the problem at hand (degrees, or radians)
- To make the trigonometric functions really functions, their range is restricted.
- In this calculator arcosine (x) gives results between 0 and 180 degrees (if angle MODE is Degree) or between 0 and Pi radians (if angle MODE is Radian).
- The range of results for arcsine(x) and arctangent(x) is between -90 degrees and +90 degrees (if angle MODE Degree) or -Pi/2 and Pi/2 (if angle MODE is Radian)

Hope it helps

Nov 06, 2009 | Texas Instruments TI-83 Plus Calculator

Hello,

1.Set the correct angle unit required by your problem: degrees, radians, or grads. [SHIFT][MODE] [3:deg] or [4:Rad]

2. Press the key for the function COS, SIN, or TAN

[COS] displays Cos(

3.Enter the angle 12 deg Screen shows cos(12

Close the right parenthesis ) Screen shows cos(12)

4.Press [=] Screen displays 0.9781

If you want the inverse trigonometric functions you access them with arccos [SHIFT] [COS] (cos^-1)

arcsin [SHIFT][SIN] (sin^-1)

actan [SHIFT][TAN] (tan^-1)

You have to know the**principal domain** for the inverse trigonometric functions (see any book on trigonometry) to understand the results.

Hope it helps.

1.Set the correct angle unit required by your problem: degrees, radians, or grads. [SHIFT][MODE] [3:deg] or [4:Rad]

2. Press the key for the function COS, SIN, or TAN

[COS] displays Cos(

3.Enter the angle 12 deg Screen shows cos(12

Close the right parenthesis ) Screen shows cos(12)

4.Press [=] Screen displays 0.9781

If you want the inverse trigonometric functions you access them with arccos [SHIFT] [COS] (cos^-1)

arcsin [SHIFT][SIN] (sin^-1)

actan [SHIFT][TAN] (tan^-1)

You have to know the

Hope it helps.

Nov 05, 2009 | Casio Office Equipment & Supplies

110 people viewed this question

Usually answered in minutes!

×