Golden angle

In Geometry, the golden angle is the smaller of the two angles created by sectioning the circumference of a circle according to the golden ratio into two arcs.

The golden angle is the angle subtended by the smaller (red) arc when two arcs that make up a circle are in the golden ratio

according to algebra, let a+b be the circumference of a circle, divided into a longer arc of length a and a smaller arc of length b such that:

{\frac {a+b}{a}}={\frac {a}{b}}

The golden angle is then the angle subtended by the smaller arc of length b.

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