The golden section is 0.618 0.236 what else

618 is the approximate value, the exact value is (5 ^ 0.5-1) / 2, which is the root of two minus one
0.246 is not the golden section

What is the golden section? What does 0.618 mean?

We often hear that there is the word "golden section". Of course, "golden section" does not mean how to divide gold. This is a metaphor, that is to say, the ratio of division is as precious as gold. So what is the ratio? It's 0.618

As shown in the figure, point C is the golden section point of AB, so the value of AC / BC is

Analysis:
Golden section ratio: [(√ 5) - 1] / 2 ≈ 0.618

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