Some Trigonometric Identities Involving Fibonacci and Lucas Numbers
Kh. Bibak and M. H. Shirdareh Haghighi
Department of Mathematics
In this paper, using the number of spanning trees in some
classes of graphs, we prove the identities:
denote the Fibonacci and Lucas numbers,
respectively. Also, we give a new proof for the identity:
Full version: pdf,
(Concerned with sequences
Received November 16 2009;
revised version received November 26 2009.
Published in Journal of Integer Sequences, November 29 2009.
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