Math, what does sin, cos, and tan represent? I am assigned to program my own calculator in c++, but i want to do the bonus for a scientific calculator. what does sin represent and all that????
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calculator
by khukhuma on Thu Mar 18, 2010 11:28 am
Last edited by khukhuma on Sat Mar 20, 2010 7:43 am, edited 1 time in total.
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Re: calculator
by Theboss on Thu Mar 18, 2010 12:54 pm
These 3 values are used to calculate the angle of the corners of a triangle.
Here is how you can calculate them if you know the lengths of the corners.
And here's a table with values
Donno if that helped, don't hesitate to reply if you need more
Here is how you can calculate them if you know the lengths of the corners.
- Code: Select all
y-axis
___|___
.- | -.A
.- | /|-.
/ | / | \
| | / | |
| / | |
___________|/____|____|___
|O B x-axis
|
|
|
|
|
AB
sin(AOB) = --
OA
OB
cos(AOB) = --
OA
sin(AOB) AB/OA AB
tan(AOB) = -------- = ----- = --
cos(AOB) OB/OA OB
And here's a table with values
Donno if that helped, don't hesitate to reply if you need more
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Re: calculator
by Ali on Thu Mar 18, 2010 10:30 pm
that reminds me of my History test
i didnt study enough, so i was clueless during the test, had nothing to write down.
but i had to wait so i did an old math equation.
i didnt study enough, so i was clueless during the test, had nothing to write down.
but i had to wait so i did an old math equation.
School is all about learning lists and filling in forms. if information is not knowledge, i havent learned anything in all these years.
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“Augustus was touring the Empire and noticed a man in the crowd who bore a striking resemblance to himself. Intrigued, he asked: ‘Was your mother at one time in service at the Palace?’ ‘No, your highness,’ he replied, ‘but my father was.’” Emperor Augustus, 63BC - AD29.
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Re: calculator
by Anthon on Thu Mar 18, 2010 10:38 pm
Ooookay I try to explain it in layman terms
You know a circle.
round, and goes around for 360 degrees.
then draw a line from the center of the circle to the edge and imagine it turning around.
The baseline is that the y -coordinate of the end of the turning line is the sinus of an angle.
The same applies to the cosinus, only it is the x- coordinate being the cosinus of an angle.
The tangent is the sinus divided by the coninus.
Thus if it is at 90 degrees. THe sinus is 1 the cosinus is 0 THe tangent is infintely high.
VERY VERY IMPORTANT. This is usually derived from the radial system. E.g. a circle is 2pi all around..
Wikipedia has a good animation of it
You know a circle.
round, and goes around for 360 degrees.
then draw a line from the center of the circle to the edge and imagine it turning around.
The baseline is that the y -coordinate of the end of the turning line is the sinus of an angle.
The same applies to the cosinus, only it is the x- coordinate being the cosinus of an angle.
The tangent is the sinus divided by the coninus.
Thus if it is at 90 degrees. THe sinus is 1 the cosinus is 0 THe tangent is infintely high.
VERY VERY IMPORTANT. This is usually derived from the radial system. E.g. a circle is 2pi all around..
Wikipedia has a good animation of it
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Re: calculator
by Anthon on Thu Mar 25, 2010 11:17 pm
If you go towards the scientific area, you will find the everywhere:P
Glad to help
Glad to help
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Re: calculator
by Anthon on Sun Apr 11, 2010 2:05 pm
Stands for the height or length a line is when positioned at a certain angle
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