Hyperbolic geometry is used very often in space, such as space travel and gravitational pulls and rotations of planets. This geometry is used most often in space because of Einstein's general Theory of Relativity assumes that space is not a Euclidean space, but a hyperbolic one.

The basic ones are:

sine, cosine, tangent, cosecant, secant, cotangent;

Less common ones are:

arcsine, arccosine, arctangent, arccosecant, arcsecant, arccotangent;

hyperbolic sine, hyperbolic cosine, hyperbolic tangent, hyperbolic cosecant, hyperbolic secant, hyperbolic cotangent;

hyperbolic arcsine, hyperbolic arccosine, hyperbolic arctangent, hyperbolic arccosecant, hyperbolic arcsecant, hyperbolic arccotangent.

An arc-hyperbolic function is an inverse hyperbolic function.

equilateral triangle (and so, if it is in Euclidean (plane) space, it has 3 angles all of which are 60°) otherwise (in Hyperbolic or Spherical space) it is an isosceles triangle.

It works in Euclidean geometry, but not in hyperbolic.