2007-04-30 21:59:10 · 6 answers · asked by Boudicca 3 in Science & Mathematics ➔ Mathematics
Pi (π) is the ratio of the circumference of a circle to its diameter.
Phi (Φ) is often called the 'Golden Ratio' and is the ratio of the length of the side of a rectangle to its width that the Ancients believed was the most 'aesthetic' and pleasing to the eye.
Both values also have many, many important uses in mathematics, science, and engineering.
HTH
Doug
2007-04-30 22:05:35 · answer #1 · answered by doug_donaghue 7 · 3⤊ 0⤋
Pi is the ratio of a circle's radius to either it's area or circumference....
pi = Circumference of circle / 2 x radius
pi = Area of circle / (radius x radius)
Phi is a greek letter, usually used in Physics to denote a certain attribute, such as an angle. (Theta and Phi are commonly used for angles.)
http://en.wikipedia.org/wiki/Phi
2007-04-30 22:03:53 · answer #2 · answered by Doctor Q 6 · 0⤊ 0⤋
pi is a mathematical constt with value =22/7 or 3.14 to b precise.
on the other hand
phi usually denotes an empty set.
2007-04-30 22:30:06 · answer #3 · answered by abhinav_chaturvedi2005 1 · 0⤊ 1⤋
They're greek letters.
Pi is useful when you're working with circular shapes.
Phi is used in loads of different sitations:
http://en.wikipedia.org/wiki/Phi
2007-04-30 22:04:00 · answer #4 · answered by solver 3 · 0⤊ 0⤋
pi is a mathematical symbol which is = 22/7 or 3.14
phi is a notation with no exact meaning.
phi can denote a function, an angle etc . it has no value.
2007-04-30 22:08:15 · answer #5 · answered by gg g 1 · 0⤊ 1⤋
http://www.alkahest.com/archive/1999/april99/PHI-factor.htm
2007-04-30 22:02:55 · answer #6 · answered by Del Piero 10 7 · 0⤊ 0⤋