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A comment on Simple Proof of Fermats Last Theorem: Is There Any Mistake Here?. Parent comment

Re:Simple Proof of Fermats Last Theorem: Is There Any Mistak... by nanis on Monday November 14, 2016 @05:47AM (#12948877)
cosine is a continuous function. Rationals are dense in reals etc. eg, arccos(1/3)
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Re:Simple Proof of Fermats Last Theorem: Is There Any Mistak... by Mi_Ka_ on Monday November 14, 2016 @06:04AM (#12948966)
Yes, arccos(1/3) = 70.5287794 degrees
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Re:Simple Proof of Fermats Last Theorem: Is There Any Mistak... by gus_massa on Monday November 14, 2016 @07:40AM (#12949407)
The important point is that

cos(arcos(1/3)) = cos(70.5287794... degrees) = 1/3

that is a rational value.

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