Difference of Squares of Hyperbolic Cotangent and Cosecant/Also presented as

Difference of Squares of Hyperbolic Cotangent and Cosecant: Also known as

Difference of Squares of Hyperbolic Cotangent and Cosecant can also be presented as:

$\csch^2 x = \coth^2 x - 1$

or:

$\coth^2 x = 1 + \csch^2 x$

Sources

• 1981: Murray R. Spiegel: Theory and Problems of Complex Variables (SI ed.) ... (previous) ... (next): $2$: Functions, Limits and Continuity: The Elementary Functions: $5$