Hyperbolic angle
- hyperbolic angle
- A hyperbolic angle in standard position is the angle at (0,0)
- between the ray to (1,1) and the ray to (x,1/x) where x > 1.
- The magnitude of the hyperbolic angle is the area of the corresponding
- hyperbolic sector which is log x .
- Note that unlike circular angle, hyperbolic angle is unbounded, as is
- the function log x, a fact related to the unbounded nature of the
- harmonic series.