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What is the exact value of the golden ratio?

Question #86938. Asked by mushu-scooby.
Last updated Aug 23 2016.

avatar
unbelievable1
Answer has 14 votes
Currently Best Answer
unbelievable1
10 year member
107 replies avatar

Answer has 14 votes.

Currently voted the best answer.
The Golden Ratio, the perfect number in mathematics, is the squareroot of 5 plus 1, divided 2.
(Sqrt(5)+1)/2 = 1.618033988749895

Interestingly, It's the only number that if squared, is equal to itself plus one. In other words, Phi^2 = Phi+1. And if you took it's reciprical, it's equal to Phi-1. Phi^-1 = Phi-1.

link https://www.mathsisfun.com/numbers/golden-ratio.html

Response last updated by nautilator on Aug 23 2016.
Oct 06 2007, 6:43 PM
avatar
rightiam
Answer has 5 votes
rightiam
17 year member
95 replies avatar

Answer has 5 votes.
unbelievable1 has it right.
link https://en.wikipedia.org/wiki/Golden_Ratio

Oct 06 2007, 7:37 PM
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