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190513 Sungmin Blog Update
Title: Side profile ke ke ke ke ke
Well … still clumsy and lacking form but …
Yesterday’s response was good … ke ke ke ke ke ke ke
Though in jeans, I’m still the most good-looking .. he he
плюшка нашел себе новое развлечение о_О
(via fysungmin)
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69113
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May
(Source: givemeaburger, via wildfjord)
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May
ㅋㅋㅋ
(Source: architecturallyspeaking, via accordingtomac)
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May
It seems to me there’s so much more to the world than the average eye is allowed to see. I believe, if you look hard, there are more wonders in this universe than you could ever have dreamed of.
(Source: daryllldixons)
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Aprㅋㅋㅋ
(Source: roryamy, via barnaforever)
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марочки к юбилею
(Source: awful-but-cheerful)
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Feb
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Feb
The familiar trigonometric functions can be geometrically derived from a circle.
But what if, instead of the circle, we used a regular polygon?
In this animation, we see what the “polygonal sine” looks like for the square and the hexagon. The polygon is such that the inscribed circle has radius 1.
We’ll keep using the angle from the x-axis as the function’s input, instead of the distance along the shape’s boundary. (These are only the same value in the case of a unit circle!) This is why the square does not trace a straight diagonal line, as you might expect, but a segment of the tangent function. In other words, the speed of the dot around the polygon is not constant anymore, but the angle the dot makes changes at a constant rate.
Since these polygons are not perfectly symmetrical like the circle, the function will depend on the orientation of the polygon.
More on this subject and derivations of the functions can be found in this other post
Now you can also listen to what these waves sound like.
This technique is general for any polar curve. Here’s a heart’s sine function, for instance
