Named in part for the bones in the nose, it is used in defining the kampyle of Eudoxus, the horizontal orientation of the lemniscate of Bernouilli, and the cardioid.
Although Dave Barry's never found a use for it, it appears in many important models, such as the energy of the oscillator in simple harmonic motion. Named in part for the bones in the nose, it is used in defining the kampyle of Eudoxus, the horizontal orientation of the lemniscate of Bernouilli, and the cardioid. For ten points, name this function, whose antiderivative is itself changed in phase ninety degrees, whose hyperbolic form defines the catenary, and whose reciprocal is the secant.
Although Dave Barry's never found a use for it, it appears in many important models, such as the energy of the oscillator in simple harmonic motion.
{cosine}