Trigonometry is the branch of mathematics that explains the relationship between sides and angles of a triangle. In a right angled triangle the three sides are perpendicular, base and hypotenuse, as ...

Astronomers prepared tables of trigonometric functions (especially for triangles on a sphere) from ancient times. With the introduction of the printing press, and the rapid decrease in the cost of ...

In one of your math classes, you might have been taught that geometry and trigonometry were products of the ancient Greeks. That's not entirely accurate, as a new discovery proves that both were ...