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Step * of Lemma rabs-cosine-rleq

∀x:ℝ. (|cosine(x)| ≤ r1)
BY
{ (InstLemma `sine-cosine-pythag` [] THEN ParallelLast') }

1
1. x : ℝ
2. (sine(x)^2 + cosine(x)^2) = r1
⊢ |cosine(x)| ≤ r1

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Latex:

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Latex:
\mforall{}x:\mBbbR{}.  (|cosine(x)|  \mleq{}  r1)


By

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Latex:
(InstLemma  `sine-cosine-pythag`  []  THEN  ParallelLast')

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