Revision history of "Halving identity for tangent (2)"

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  • (cur | prev) 22:49, 21 October 2017Tom (talk | contribs). . (510 bytes) (+510). . (Created page with "==Theorem== The following formula holds: $$\tanh \left( \dfrac{z}{2} \right) = \dfrac{\cosh(z)-1}{\sinh(z)},$$ where $\tanh$ denotes hyperbolic tangent, $\cosh$ denot...")