Just in case you don't have to look them up in your book or whatever. And so I can learn how to use Latex!
- $ sinh(x) = \frac{e^x - e^{-x}}{2} $
- $ cosh(x) = \frac{e^x + e^{-x}}{2} $
- $ tan(x) = \frac{sinh(x)}{cosh(x)} = \frac{e^x - e^{-x}}{e^x + e^{-x}} $
