%I A120683
%S A120683 1,0,3,5,2,7,6,1,8,0,4,1,0,0,8,3,0,4,9,3,9,5,5,9,5,3,5,0,4,9,6,1,9,3,3,
%T A120683 1,3,3,9,6,2,7,5,6,0,5,2,7,9,7,2,2,0,5,5,2,5,6,0,1,2,8,2,9,2,6,0,2,2,7,
%U A120683 8,9,8,9,9,5,2,0,7,9,8,7,6,8,9,4,7,1,8,9,8,7,7,6,9,9,8,6,6,2,0,8,3,5,8
%N A120683 Decimal expansion of secant of 15 degrees (cosecant of 75 degrees).
%C A120683 Side length of the largest equilateral triangle that can be inscribed 
               in a unit square (as stated in MathWorld/Weisstein link).
%H A120683 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               EquilateralTriangle.html">Equilateral Triangle</a>.
%F A120683 a(n) = sec(Pi/12) = sec(A019679) = sqrt(6) - sqrt(2) = A010464 - A002193 
               = csc(5*Pi/12) = 1/sin(5*Pi/12) = 1/sin(10*A019691) = 1/A019884.
%e A120683 1.03527618041008304939559535049...
%Y A120683 Cf. A019679, A019691, A019884, A010464, A002193.
%Y A120683 Sequence in context: A164611 A073897 A097465 this_sequence A079313 A125132 
               A026184
%Y A120683 Adjacent sequences: A120680 A120681 A120682 this_sequence A120684 A120685 
               A120686
%K A120683 cons,nonn
%O A120683 1,3
%A A120683 Rick L. Shepherd (rshepherd2(AT)hotmail.com), Jun 24 2006