Trigonometry/Cosh, Sinh And Tanh - Wikibooks, Open Books For An ...

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cosh {\displaystyle \displaystyle \cosh } is an abbreviation for 'cosine hyperbolic', and sinh {\displaystyle \displaystyle \sinh } is an abbreviation for 'sine hyperbolic'.

sinh {\displaystyle \displaystyle \sinh } is pronounced sinch,

cosh {\displaystyle \displaystyle \cosh } is pronounced 'cosh', as you'd expect,

and tanh {\displaystyle \displaystyle \tanh } is pronounced tanch.

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