Power Reduction Formulas/Hyperbolic Cosine Cubed

Theorem

 * $\cosh^3 x = \dfrac {\cosh 3 x + 3 \cosh x} 4$

where $\cosh$ denotes hyperbolic cosine.

Also see

 * Square of Hyperbolic Sine
 * Square of Hyperbolic Cosine
 * Cube of Hyperbolic Sine
 * Fourth Power of Hyperbolic Sine
 * Fourth Power of Hyperbolic Cosine