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"Analytic-Phi" for Math Nerds Trucker Hat
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colour
Yellow and Yellow
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"Analytic-Phi" for Math Nerds Trucker Hat
Geometry is one of the most ancient branches of mathematics. The Greeks developed a new method called Co-ordinate geometry or Analytical geometry; which today is also called “Cartesian” after the name of Rene Decartes (1596-1665). In order to transform from rectangular Cartesian coordinates (x,y,z) to spherical ones, and back, use the following Algebraic formulas: x = rho cos(theta)sin(phi), y = rho sin(theta)sin(phi), z = rho cos(phi), rho = ±sqrt(x2+y2+z2), theta = arctan(y/x), phi = arccos(z/sqrt[x2+y2+z2]). The value of phi is usually chosen in the interval between 0 and Pi, inclusive. The sign of rho is determined by which of the values of the arctangent function is chosen. Head hurt yet?? LOL! You must not be a math nerd!!
Customer Reviews
4.8 out of 5 stars rating2.3K Total Reviews
2,329 Reviews
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I totally love my hats. I love the designs,how the trucker hat fits, the product is amazing. And I can't stop buying them. Very well done, centered well.
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By Amandine K.22 September 2015 • Verified Purchase
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arrived 16 days after shipping , but not disappointed, really nice quality :) I'll definitely book an other one very soon! amazing , even better than on the website! the color are awesome ! :)
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By Janice W.22 March 2022 • Verified Purchase
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great present well made and a good fit thanks so much. well made a very nice hat great service
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Product ID: 148350699221029033
Posted on 13/02/2011, 1:29 PM
Rating: G
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