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Help with Math
- Thread starter C2
- Start date
First off she ruined this entire video by stating Pi is a Constant.
Meaning pi = 3.14159265.... and so on and so on. Thats it. Stop thinking. Pi is Pi it is nothing more nothing less than that.
Now when we take this Constant and throw it into equations Pi is still what it is. Just pi = 3.14159265. How you use Pi is up to you.
Shuch as the equation Pi=r^2 or Pi equals the radius squared.
From what I seen of the video she is ether confused or trying to confuse others or trying to sound intellegent.
That 2*pi thing she was talking about. Is an equation of sorts that gives you radians. 360degrees/2*pi = one radian or about 57.2957......
Now the Radian is a way to measure angles. The degree in which we measure angle normally does not really give a TRUE measurement in the higher end of mathematics. The radian will havever give a a more acurate measurement of an angle.
Now that being said the use of the radian in the field of communications. I can see the radian being used highly in satellite communication. But at the same time we are talking perfection here and perfect circles and what not.
The Radian
If you are building a round porch Pi and angles will prolly suit you just fine. If you are wanting to do something very specific and with great percision is required then switch over to radians. And will encompass more complicated equations then the simple one I showed. Because Satellites dont travel in perfect circles and the earth isnt a perfect sphere.
I probably confused someone even more.
Meaning pi = 3.14159265.... and so on and so on. Thats it. Stop thinking. Pi is Pi it is nothing more nothing less than that.
Now when we take this Constant and throw it into equations Pi is still what it is. Just pi = 3.14159265. How you use Pi is up to you.
Shuch as the equation Pi=r^2 or Pi equals the radius squared.
From what I seen of the video she is ether confused or trying to confuse others or trying to sound intellegent.
That 2*pi thing she was talking about. Is an equation of sorts that gives you radians. 360degrees/2*pi = one radian or about 57.2957......
Now the Radian is a way to measure angles. The degree in which we measure angle normally does not really give a TRUE measurement in the higher end of mathematics. The radian will havever give a a more acurate measurement of an angle.
Now that being said the use of the radian in the field of communications. I can see the radian being used highly in satellite communication. But at the same time we are talking perfection here and perfect circles and what not.
The Radian
If you are building a round porch Pi and angles will prolly suit you just fine. If you are wanting to do something very specific and with great percision is required then switch over to radians. And will encompass more complicated equations then the simple one I showed. Because Satellites dont travel in perfect circles and the earth isnt a perfect sphere.
I probably confused someone even more.
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On a piece of paper, but can a perfect circle actually be produced? Can you actually have a perfect circle?
BTW, if you are dealing with equidistant points you are dealing with lines, so how can lines between points create a perfect circle?
Pi is a constant, wikipedia told me so.
Pi - Wikipedia, the free encyclopedia
and wiki is never wrong...
anyway, what do you mean? It is not a constant?
and that is the point, we should NOT use Pi, we should use Tau instead, where Tau = 2*Pi
Pi does not = r^2.
Well it could, for a special circle, if we are talking radius...or if Pi is not Pi and is supposed to be some sort of unorthadox variable (Pee sub eye?)
Anyway, noodle through some trig proofs and see if it's easier to use Tau.
OK, back to your first point - yeah, she ruined it for me too, but that was when she started talking...
I was wondering about the "constant" statement myself.. any value that does not change is referred to as a constant. The value of Pi never changes, so by definition it is a constant.
Not a huge fan of the Tau concept though. Pi has worked beautifully for all this time.. inventing a new term for 2Pi is silly IMO.
Not a huge fan of the Tau concept though. Pi has worked beautifully for all this time.. inventing a new term for 2Pi is silly IMO.
Since there are an infinite number of points, the lines would be infinitely small. Mull that one over for awhile lol..
Along the same lines (no pun intended), a line by it's mathematical definition has no beginning and no end, and it is one dimensional. Zero width and zero height. A line is made up of an infinite number of points as well.. A connecting line between two points is a line segment. To my knowledge, no human being has ever seen a line in the mathematical sense or line segments for that matter since a true line or segment must be one dimensional. It would be impossible for a person to sense it's presence on any level.
Ain't trig fun?
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Depends on your defition of perfect.
Lets say yours is be perfect needs to be 3.00 plus/minus .02. Then yes I believe this could be created. However I would consider a perfect circle to say 3.(with zeros out to infinity) plus minus 1 x 10 to the power of neagtive infinity. Mine I do not think will ever be achieved.