Wrobg answer whenever I use radians

Question 1

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Casio fx-9750GII giving me wrong answers when I try to do tan-1(3.04) it gives me 1.252998321, where other cals give 71.79151553

Your angle unit is set to radians, while on the other calculators it is in degrees. Change the angle unit to degrees.

Sep 17, 2018 • Casio Office Equipment & Supplies

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Ti-nspire cx CAS gives answer in degrees even though it is in radians mode.

When you set some configuration parameter you must scroll down the setup until you reach the OK button. Press the OK button to validate.

Oct 09, 2014 • Texas Instruments TI-Nspire CX CAS...

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1answer

Wrong trigonometric answers

The sine of 0.5 radians is about 0.4794, so your calculator seems to be giving you the correct answer in that case.

The sine of 0.5 degrees is about 0.00872, which your calculator may be displaying as something line 8.72 times ten to the negative 3. Look to the far right end of the number: do you see "x10-3" with the "-3" superscripted? In that case, again your calculator is giving you the correct answer.

Sep 10, 2012 • Casio FX-115ES Scientific Calculator

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My tangent button is giving me wrong answers.

When you are handling trigonometric functions and their inverses, the results depend on the angle unit your calculator is configured for.
When angle is in degrees, tan (1/2)=8.726867791x10^(-3)
When angle is in radians, tan(0.5 radians)=0.5463024898

It seems that your angle unit on calculator is set to degrees, while it should be set to radians.

Jun 14, 2012 • Casio FX-300MS Calculator

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Hi How do i do sin inverse on my calculator. I have tried shift then sin (which is sin inverse) and then the sum but it gives the wrong answer?

You may be working in degrees when you need to be in radians, or vice versa.

Press the MODE button until it offers you the choice D R G (Degrees, radians, grads) and select the corresponding number. Then try again.

Apr 20, 2011 • Casio FX83ES Scientific Calculator

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1answer

Whenever i put in sin or cos or tan on my calculator the wrong answer comes up, how do i fix this?

Most likely you do have the calculator in radians (or if you are working in radians, you have it in degrees). Press the mode button, move cruser down to "radians degrees" highlight degrees. and press "2nd quit". things sould be better!

Jun 03, 2010 • Texas Instruments TI-83 Plus Calculator

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2answers

Sin, cos, or tan, on casio wrong answer. another cac right answer

Hello,
It may be due to the angle unit used. You can have angles in degrees, in radians, and in grads. You should set the default angle unit to waht you problem calls for.
To set degree as default SHIFT MODE 3
To set radians as default SHIFT MODE 4
To set grads as default SHIFT MODE 5

The values of angles calculated by the inverse trigonometric functions are in the default unit that is set . This may be the source of the wrong answers that you get.

Hope it helps.

Sep 16, 2009 • Casio FX-115ES Scientific Calculator

1helpful

1answer

Using Tan,sin, cosin

Alot of people seem to be having this problem. Angles can be measured in two units, degrees and radians. Your calculator is currently doing everything in terms of radians. I have an 84 but I'm sure the 83 is similar, go under MODE and look for Degrees and Radians and make sure you choose degrees. if you have to convert 360[degrees] = 2* pi [radians]
(easy to remember, 360deg in a circle, 2pi radians in a circle)
Good luck

Aug 11, 2009 • Texas Instruments TI-83 Plus Calculator

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2answers

Just trying to do this simple cos problem

can yall tell me whats the best way to get the answer i need ok simplify 3x/x+5+x-7

Jul 15, 2008 • Texas Instruments TI-89 Calculator

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1answer

Radian mode does not work properly

-1E-13 is a very small number. When doing this kind of a problem you can regard 1E-13 as 0.

Remember that pi is an irrational number. It is only estimated on your calculator. I just played around with a TI-83 and found the following answers:

cos(pi/2) = 0
cos(2*pi + pi/2) = 0
cos(4*pi + pi/2) = 1E-13
cos(20*pi + pi/2) = -1E-13

As you know, that correct answer to each of these is 0. The calculator gives non-zero answers because some very small errors are accumulating. There is nothing wrong with your calculator.

Nov 20, 2007 • Texas Instruments TI-83 Plus Calculator

Question 2

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Hello,
To avoid problems,set your angle unit to radians by default. Press [MODE]. If Radian is highlighted (text on black background), it is indeed the default mode. If Degreee is highlighted, scroll dowm to the line and use the left arrow to select Radian and press ENTER. Radian will start blinking.
Any number you feed a function that acts on angles (sin, cos, tan) will be considered in radians. Any result that comes out of the inverse trigonometric functions (arcsin, arccos, arctan) is in radian. The angle coming from a conversion from cartesian coordinates to polar coordinates is in radian.
You have a simple way to convert the value from radians to degrees because 1 rad=180/pi. Store this value in a variable [STO->] D
180/[2nd][PI] [STO->] D

Since the last result is always stored in [Ans] all you have to do is to multiply by D: [Ans][x][ALPHA]D converts results in degrees.

Hope it helps

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Wrobg answer whenever I use radians

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Casio fx-9750GII giving me wrong answers when I try to do tan-1(3.04) it gives me 1.252998321, where other cals give 71.79151553

Ti-nspire cx CAS gives answer in degrees even though it is in radians mode.

Wrong trigonometric answers

My tangent button is giving me wrong answers.

Hi How do i do sin inverse on my calculator. I have tried shift then sin (which is sin inverse) and then the sum but it gives the wrong answer?

Whenever i put in sin or cos or tan on my calculator the wrong answer comes up, how do i fix this?

Sin, cos, or tan, on casio wrong answer. another cac right answer

Using Tan,sin, cosin

Just trying to do this simple cos problem

Radian mode does not work properly

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Casio fx-9750GII giving me wrong answers when I try to do tan-1(3.04) it gives me 1.252998321, where other cals give 71.79151553

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Wrobg answer whenever I use radians

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Related Questions:

Casio fx-9750GII giving me wrong answers when I try to do tan-1(3.04) it gives me 1.252998321, where other cals give 71.79151553

Ti-nspire cx CAS gives answer in degrees even though it is in radians mode.

Wrong trigonometric answers

My tangent button is giving me wrong answers.

Hi How do i do sin inverse on my calculator. I have tried shift then sin (which is sin inverse) and then the sum but it gives the wrong answer?

Whenever i put in sin or cos or tan on my calculator the wrong answer comes up, how do i fix this?

Sin, cos, or tan, on casio wrong answer. another cac right answer

Using Tan,sin, cosin

Just trying to do this simple cos problem

Radian mode does not work properly

Not finding what you are looking for?

TI-83 Plus Calculator

Casio fx-9750GII giving me wrong answers when I try to do tan-1(3.04) it gives me 1.252998321, where other cals give 71.79151553

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