You probably have an intuitive idea of what a circle is: the shape of a basketball ... This branch of math, known as trigonometry, has everyday practical applications such as construction, GPS ...

Now it appears that the Babylonians invented trigonometry, almost 1,000 years ... that are derived from putting the triangle inside a circle. The Babylonians, however, used ratios of the line ...

This branch of math, known as trigonometry, has everyday practical applications such as construction, GPS, plumbing, video games, engineering, carpenter work and air flight navigation. To memorize a ...