
Hyperbolic Functions
Public-domain book
Hyperbolic Functions
Open Library OL1794889W
In mathematics, hyperbolic functions are analogues of the ordinary trigonometric functions, but defined using the hyperbola rather than the circle. Just as the points (cos t, sin t) form a circle with an unit radius, the points (cosh t, sinh t) form the right half of the unit hyperbola.
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