Why is cos -X = Cos X?
Hi guys, can you explain to me why is cos -x = cos x??
thanks in advance 
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Why is cos -X = Cos X?Why is cos -X = Cos X?Currently viewing this thread: 1 (0 members and 1 guests)  August 29th, 2003 10:58 AM August 29th, 2003 02:16 PM http://www.sctboces.org/spencer/mathpage/ma43.gif That is what you get when you graph cos. I think you'll be able to understand when you take a look at it September 2nd, 2003 01:40 PMthanx, you've been a great help ___________________ "The only thing i hate about Sunday is that because tomorrow is Monday" |
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