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Any triangle, Trigonometric function - second episode! (Posted on 2007-11-18) Difficulty: 3 of 5
Prove that in any triangle cos(A)+cos(B)+cos(C)>1

See The Solution Submitted by Chesca Ciprian    
Rating: 3.0000 (1 votes)

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re(3): non-Euclidean case? | Comment 6 of 12 |
(In reply to re(2): non-Euclidean case? by Dej Mar)

Television  -  "The Enterprise". 

Well that's the name of the 'ship' but I doubt that I have the series name correct. 

No matter, I am treading grounds very shaky to me.

That we both might be treading shakily is no matter, importantly we understand why you raised the "non-Euclidean" idea.

For those up to it, here is an obvious challenge.

  Posted by brianjn on 2007-11-19 07:58:10

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