Mathematics

Understanding Pi

Pi is the ratio of the circumference of a circle to its diameter. It is a constant. The familiar value is 3.14159. It is irrational – it cannot be written as a fraction using 2 integers, although, some approximations, like 22 / 7, are used. It is transcendental – this means there is no algebraic […]

Mathematics

Understanding Radians

A formal definition of the radian is: One radian is the angle subtended at the center of a circle by an arc that is equal in length to the radius of the circle. – Wikipedia A better (simpler) definition at Math Open Reference is: One radian is the angle made at the center of a […]