View source for Pythagorean identity for alternate delta trigonometric functions

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<strong>[[Pythagorean identity for alternate delta trigonometric functions|Theorem]]:</strong> Let $\mathbb{T}$ be a [[time scale]]. The following formula holds:
$$\mathrm{c}_{pq}^2(t,s;\mathbb{T})+\mathrm{s}_{pq}^2(t,s;\mathbb{T})=1,$$
where $\mathrm{c}_{pq}$ denotes the [[delta cpq|alternative delta cosine]] and $\mathrm{s}_{pq}$ denotes the [[delta spq|alternative delta sine]].
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<strong>Proof:</strong> █ 
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