Golden Ratio using an equilateral triangle inscribed in a circle

Re:Golden Ratio using an equilateral triangle inscribed in a... by tigerlily on Wednesday January 28, 2026 @03:35AM (#46792591)

I once wondered what happens when you take x away from x squared, and let that equal 1.

I sat down and worked it out. What do you know golden ratio.

Oh and this other number, -0.618. Anyone know what it's good for?

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Re:Golden Ratio using an equilateral triangle inscribed in a... by e9 on Wednesday January 28, 2026 @03:41AM (#46792638)

0.618 is used as level for trading with fibonacci retracements: https://centerpointsecurities.com/fibonacci-retracements/

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Re:Golden Ratio using an equilateral triangle inscribed in a... by x1000 on Wednesday January 28, 2026 @03:43AM (#46792658)

It’s the negative of the inverse of the golden ratio. (Also 1 minus the golden ratio.) So, good for anything the golden ratio itself is good for.

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