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Inverse cos of 52 degrees - Office Equipment & Supplies

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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

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When i do sin cos and tan inverse of any number i get math error


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

Oct 13, 2016 | Office Equipment & Supplies

1 Answer

Sin, cos,tan don't work. For example, I click 1, 2nd and cos and I'm getting 1 instead of 0.54. In all other buttons the 2nd function is working but not for sin, cos, tan. Thanks for any help!


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

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

1 Answer

How can i calculate sin cos tan and see the result in degree mins and seconds in my calculator kadio kd82lc


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.

Mar 18, 2012 | Office Equipment & Supplies

1 Answer

I have the Casio fx-300MS and I cannot find the inverse button to find the angle of a right angle triangle


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

1 Answer

Using inverse cosign and inverse sin always bring up domain errrors. For example, I used the equation COS -1(185 / -20) . And it always came up with domain error. This is the same equation my teacher gave...


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!

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

1 Answer

How to use calculator on how to evaluate trigonometric functions


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:
  • 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.
Arguments can be given as numbers with mantissa (2.718), as fractions (use the fraction key below [CALC]) or as degree, minute, second (30°12'45") using the [°'"] key for input. To switch between degrees (1 circle = 360°), radians (1 circle = 2?), or grad (1 circle = 400 gon), use [SHIFT][DRG>].

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

1 Answer

Why the cos of 90 is -0.44... ?? and the tan sin its'nt correct in the calculator what can i do ?


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.

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

1 Answer

I am getting the wrong answers with the tan -1 function


Hello,
That habit of TI, Casio, and Sharp to label the inverse trigonometric functions with the -1 superscript can cause confusions.
  1. 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).
  2. 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)
  3. To make the trigonometric functions really functions, their range is restricted.
  4. 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).
  5. 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)
With this information you should be able to set the angle unit correctly ([MODE][Radian] or [MODE][Degree] ) and interpret the results. If you want to extend the angle to other values, use the periodicity of the trigonometric functions.

Hope it helps

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

1 Answer

How to use the cosine,tangent etc functions of calculator fx-82ES plus


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.

Nov 05, 2009 | Casio Office Equipment & Supplies

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