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An algebraic number of degree 16. - Charles R Greathouse IV, Nov 02 2012
Ivan Panchenko, Table of n, a(n) for n = 0..1000
Dr. Rob, The Math Forum at Drexel, The Exact Value of the Sine of 1 Degree
Scott Surgent, Exact values of the sine and cosine functions in increments of 3 degrees, 2012
Wikipedia, Exact trigonometric constants
Equals cos(87 degrees) = cos(29*Pi/60) = sin(Pi/60) = sqrt(8-sqrt(3)-sqrt(15)-sqrt(10-2*sqrt(5)))/4 (an intermediate calculation by Dr. Rob - see Math Forum link). - Rick L. Shepherd, Jul 03 2006
Cf. A019896 (cosine of 3 degrees), A019901 (tangent of 3 degrees), A019985 (cotangent of 3 degrees).
Sequence in context: A071216 A069483 A011226 * A222222 A071544 A031285
Adjacent sequences: A019809 A019810 A019811 * A019813 A019814 A019815
N. J. A. Sloane.