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Step * of Lemma cosine0

cosine(r0) = r1
BY
{ (Auto THEN (InstLemma `cosine-is-limit` [⌜r0⌝]⋅ THENA Auto)) }

1
1. Σi.-1^i * (r0^2 * i)/(2 * i)! = cosine(r0)
⊢ cosine(r0) = r1

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Latex:

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Latex:
cosine(r0)  =  r1


By

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Latex:
(Auto  THEN  (InstLemma  `cosine-is-limit`  [\mkleeneopen{}r0\mkleeneclose{}]\mcdot{}  THENA  Auto))

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