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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: College math
Topic ID: 578
Message ID: 1
#1, RE: basic concepts of trignometry in brief
Posted by alexb on Jul-19-06 at 03:01 PM
In response to message #0
I recommend a book

Trigonometry by I.M. Gelfand and M. Saul, Birkhauser, 2001, 0817639144