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A140240
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Decimal expansion of arccos(7/8).
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11
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5, 0, 5, 3, 6, 0, 5, 1, 0, 2, 8, 4, 1, 5, 7, 3, 0, 6, 9, 7, 1, 3, 1, 4, 8, 7, 3, 9, 8, 7, 4, 2, 1, 9, 4, 4, 5, 0, 4, 3, 8, 7, 4, 6, 6, 1, 9, 3, 6, 7, 6, 3, 8, 7, 2, 6, 7, 8, 4, 7, 5, 5, 7, 4, 8, 1, 1, 5, 0, 1, 2, 0, 9, 6, 2, 0, 4, 2, 4, 4, 4, 8, 2, 3, 4, 9, 7, 4, 8, 4, 4, 5, 6, 0, 2, 9, 2, 0, 3, 2, 1, 0, 1, 8, 5
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Angle in radians of the least angle of the obtuse scalene triangle with sides of lengths 2, 3 and 4, the scalene triangle with least integer side lengths.
A140240 + A140242 + A140244 = arccos(7/8) + arccos(11/16) + arccos(-1/4) = Pi.
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FORMULA
| arccos(7/8) = arcsin(sqrt(15)/8) = arctan(sqrt(15)/7).
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EXAMPLE
| 0.50536051028415730697131487398742194450438746619367638726784755748115012096...
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PROG
| (PARI) acos(7/8)
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CROSSREFS
| Cf. A140239, A140241, A140242, A140243, A140244, A140245, A140246, A140247, A140248, A140249.
Sequence in context: A073441 A202325 A199382 * A091672 A144702 A156716
Adjacent sequences: A140237 A140238 A140239 * A140241 A140242 A140243
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KEYWORD
| cons,nonn
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AUTHOR
| Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 14 2008
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