Need help withe the sin, cos, tan problem with ti -... (by 6 users)
posted by angelsmiley on Feb 17, 2007
whenever i press sin, cos, or tan, put in a number, and press enter, a wrong answer always comes up. when i do it another calculator, the correct answer comes up. how can i fix this problem? i know there is a way to do this.
5 Other Users Have The Same Problem
Comment by Guest, posted on Aug 04, 2008
I am having the same problem as angelsmiley. Can you help?
Comment by lmah, posted on May 31, 2008
I don't know the sequence of keys to punch to get angles from sines, cosines and tangents, and vice versa.
Comment by Guest, posted on May 05, 2008
The exact same thing happens for me. I have SATs tomorrow with a calculater that doesn`t do SIN COS or TAN right.
oh no.
Comment by zebras6969, posted on Mar 27, 2008
automatically rounding all of my answers how do i turn the rounding off?????????
Comment by Guest, posted on Feb 26, 2008
whenever i press sin, cos, or tan, put in a number, and press enter, a wrong answer always comes up. when i do it another calculator, the correct answer comes up.
Best Solution
posted on Oct 08, 2007
for the TI-30Xa ... set entery mode to "deg" with [DRG], then input number and press [SIN], [COS], OR [TAN]. Most functions on that model require the pattern number, function.
Here's a link to the TI-30Xa user manual in PDF format ... http://www.usm.maine.edu/math/120D/TI30x...
Here's a link to the TI-30Xa user manual in PDF format ... http://www.usm.maine.edu/math/120D/TI30x...
Comment by bearded, posted on Oct 09, 2007
CONVERSELY ...
To extract the angular degree from a sin, cos, or tan, use [2nd][SIN], [COS], or [TAN], respectively. For example ...
To get the angular degree for tan .5760, cycle [DRG] to set the entry mode to "DEG", then enter [.5760][2nd][TAN]. This calls the yellow function above the [TAN] key, TAN^-1^ and returns the angle as a decimal ... 29.94.
To change the display mode to show degrees, minutes, and seconds (DMS), use [2nd][=]. To change the display back to decimal, use [2nd][+]. Note: to use degree values in calculations they must be in decimal display mode.
To convert the result between deg, rad, or grad, cycle [2nd][DRG].
To extract the angular degree from a sin, cos, or tan, use [2nd][SIN], [COS], or [TAN], respectively. For example ...
To get the angular degree for tan .5760, cycle [DRG] to set the entry mode to "DEG", then enter [.5760][2nd][TAN]. This calls the yellow function above the [TAN] key, TAN^-1^ and returns the angle as a decimal ... 29.94.
To change the display mode to show degrees, minutes, and seconds (DMS), use [2nd][=]. To change the display back to decimal, use [2nd][+]. Note: to use degree values in calculations they must be in decimal display mode.
To convert the result between deg, rad, or grad, cycle [2nd][DRG].
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Solution #2
posted on Nov 09, 2007
here are the steps in changing it from radian to degrees
1. turn on your TI-83 plus
2. press the MODE button near the top of your calculator
3.go down to options and move the highlight from radian to degree, press enter and clear
you're good to go
1. turn on your TI-83 plus
2. press the MODE button near the top of your calculator
3.go down to options and move the highlight from radian to degree, press enter and clear
you're good to go
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Solution #4
posted on Oct 08, 2007
To extract an angular degree from a sin, cos, or tan (reciprocal), use [2nd][TAN], [SIN], or [COS]. For example ...
To get the angular degree for tan .5760, cycle [DRG] to set the entry mode to "DEG", then enter [.5760][2nd][TAN]. This calls the yellow function above the [TAN] key, TAN^-1^ and returns the decimal result 29.94.
To change the display mode to show degrees, minutes, and seconds (DMS) with [2nd][=]. To change the display back to decimal use [2nd][+]. Note that to use degrees in calculations they must be in decimal mode.
To convert the result between deg, rad, or grad, cycle [2nd][DRG].
To get the angular degree for tan .5760, cycle [DRG] to set the entry mode to "DEG", then enter [.5760][2nd][TAN]. This calls the yellow function above the [TAN] key, TAN^-1^ and returns the decimal result 29.94.
To change the display mode to show degrees, minutes, and seconds (DMS) with [2nd][=]. To change the display back to decimal use [2nd][+]. Note that to use degrees in calculations they must be in decimal mode.
To convert the result between deg, rad, or grad, cycle [2nd][DRG].
Comment by bearded, posted on Oct 08, 2007
can someone DELETE that POST, please - wrong question , wrong calculator. :D
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Solution #8
posted on Nov 09, 2007
I'm not too sure what the actual problem is.
If the problem has nothing to deal with your mode not being in deg then I think it might be your input method.
Maybe you can provide an example?
Such as... sin 90.
So what you said is, you enter...
1)sin
2)number (in this case 90)
3)enter [=]
This will appear to be 90 on your F-502, which is obviously incorrect. For some strange reason, it operates different and you have to enter it in the different order.
Instead, try this:
1)number (in this case 90)
2)sin
This should give you an answer, without having to press enter [=], of 1, which is in fact correct.
If the problem has nothing to deal with your mode not being in deg then I think it might be your input method.
Maybe you can provide an example?
Such as... sin 90.
So what you said is, you enter...
1)sin
2)number (in this case 90)
3)enter [=]
This will appear to be 90 on your F-502, which is obviously incorrect. For some strange reason, it operates different and you have to enter it in the different order.
Instead, try this:
1)number (in this case 90)
2)sin
This should give you an answer, without having to press enter [=], of 1, which is in fact correct.
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Solution #9
posted on Nov 09, 2007
From the description it's not a mode problem, it's a PBCAK - Problem Between Chair and Keyboard. This is a Reverse Polish Notation calculator. The correct way to get the sin of something is NOT "press sin, cos, or tan, put in a number, and press enter" it is "put in number and press sin, cos, or tan". Data first, then function. If you need to input more than one datum, use the ENTER key: "2 ENTER 2 +"
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Solution #10
posted on Oct 31, 2007
Guest
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Input the number first.
Press the trig function next.
That's it.
For example:
Press '3' and '0'.
Press 'SIN'
The display shows the answer: 0.500
Press the trig function next.
That's it.
For example:
Press '3' and '0'.
Press 'SIN'
The display shows the answer: 0.500
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