The y-length complex spiral, as defined on the pages preceding, is only one of an infinite number of sizes. The dimension, or scale, of the spiral can be defined by the length of its base OB along the x-axis, the asymptote of the spiral being the vertical line passing through the point on the x-axis OB2 which is double the length of OB.
OB = b
beylength/b + iθ = beylength/b (Cosθ + iSinθ)
beylength/b - iθ = beylength/b (Cosθ - iSinθ)
be-ylength/b + iθ = be-ylength/b (Cosθ + iSinθ)
be-ylength/b - iθ = be-ylength/b (Cosθ - iSinθ)