What does cosh mean?
Cosh=Hyperbolic Cosine
coshx = (e^x + e^(-x))/2
Or...
a thick heavy stick or bar used as a weapon; a bludgeon.
verb
I hit (someone) on the head with a cosh...
LOL...
No clue, whatsoever...
Google it!
Cosh is the hyperbolic cosine function, which is the hyperbolic analogue of the Cos circular function used throughout trigonometry.
