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Sale Price $16.20.
Original Price $19.05 Comp. value
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"Analytic-Phi" for Math Nerds Trucker Hat
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Style
Foam Trucker Hat
+$5.35
+$12.65
+$11.45
+$12.65
+$11.45
+$23.65
+$18.75
Color
Yellow and Yellow
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About This Design
"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
4.7 out of 5 stars rating2.3K Total Reviews
2,327 Reviews
Reviews for similar products
5 out of 5 stars rating
By Homer R.May 27, 2020 • Verified Purchase
Custom Foam Trucker Hat, White and Black
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I’m very proud of this product and how it turned out ... ready to help promote my business/music ... and excited for customers to order more :). Printing is a success thanks so much ... makes me excited to see my future products arrive in the mail!!! Soon!
5 out of 5 stars rating
By zabihullah w.September 17, 2023 • Verified Purchase
Custom Foam Trucker Hat, White and Black
Zazzle Reviewer Program
really cheap for such high durable long lasting quality using different color inks. I think its because they mass produce for a lot of customers is why how they can deliver good lasting quality that is environmental friendly without compromising durability. was great. but light colors or light color letters on dark background has not been best looking unless if its white on black and not light blue on black.
4 out of 5 stars rating
By Shawn K.June 26, 2021 • Verified Purchase
Custom Foam Trucker Hat, White and Black
Zazzle Reviewer Program
The hat fits great. Great quality. I’m not crazy about the white on the hat. It’ll get dirty easily. A darker color would probably be better. I’ve been to the Strasburg Railroad several times. They don’t sell hats like this. Only the striped engineers hats. The colors look great! The image quality is fantastic! I’m just now crazy about the white on the hat. I added some Strasburg lapel pins to my hat!
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Other Info
Product ID: 148350699221029033
Created on: 2/13/2011, 1:29 PM
Rating: G
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