Difference of Squares of Hyperbolic Cosine and Sine/Also presented as

Difference of Squares of Hyperbolic Cosine and Sine: Also known as

Difference of Squares of Hyperbolic Cosine and Sine can also be presented as:

$\cosh^2 x = 1 + \sinh^2 x$

or:

$\sinh^2 x = \cosh^2 x - 1$

Sources

• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): hyperbolic function