Difference between revisions of "Relationship between csc, Gudermannian, and coth"
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Latest revision as of 07:43, 8 June 2016
Theorem
The following formula holds: $$\csc(\mathrm{gd}(x))=\mathrm{coth}(x),$$ where $\csc$ is the cosecant, $\mathrm{gd}$ is the Gudermannian, and $\mathrm{coth}$ is the hyperbolic cotangent.
