View source for Relationship between arctan and arccot

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<strong>[[Relationship between arctan and arccot|Theorem]]:</strong> The following formula holds:
$$\mathrm{arctan}(z) = \mathrm{arccot}\left( \dfrac{1}{z} \right),$$
where $\mathrm{arctan}$ denotes the [[arctan|inverse tangent]] and $\mathrm{arccot}$ denotes the [[arccot|inverse cotangent]].
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<strong>Proof:</strong> █ 
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