A051559 -id:A051559 - cp's OEIS frontend

A051553 Decimal expansion of sin (Pi degrees). (Of course sin (Pi radians) = 0.)

0, 5, 4, 8, 0, 3, 6, 6, 5, 1, 4, 8, 7, 8, 9, 5, 3, 0, 8, 8, 7, 7, 4, 8, 7, 1, 3, 5, 3, 9, 8, 3, 3, 2, 5, 4, 0, 6, 5, 6, 2, 5, 1, 0, 5, 8, 5, 6, 5, 1, 5, 3, 6, 3, 4, 4, 4, 8, 7, 2, 4, 9, 5, 9, 2, 7, 3, 6, 6, 9, 5, 9, 8, 5, 3, 6, 7, 6, 6, 1, 6, 4, 2, 2, 3, 0, 4, 3, 4, 7, 2, 3, 0, 3, 6, 7, 5, 2, 0, 0, 6

Offset: 0

Hsu, Po-Wei (Benny) (arsene_lupin(AT)intekom.co.za)

			0.054803665148789530887748713539833254... [corrected by _Georg Fischer_, Jul 29 2021]

Cf. A051554, A051555, A051557, A051558, A051559.

Cf. A086463 (Pi^2/18).

Maple
```
Digits := 100: evalf(sin(Pi^2/180));
```

sin(Pi^2/180) \\ Charles R Greathouse IV, Nov 05 2017

A051555 Decimal expansion of tan(Pi degrees). (Of course, tan(Pi radians) = 0.)

Original entry on oeis.org

0, 5, 4, 8, 8, 6, 1, 5, 0, 8, 0, 8, 0, 0, 3, 3, 2, 8, 8, 4, 7, 9, 9, 8, 7, 8, 9, 2, 0, 8, 2, 8, 1, 6, 9, 4, 1, 3, 0, 8, 8, 5, 1, 0, 4, 1, 3, 8, 5, 1, 0, 8, 3, 5, 2, 2, 2, 3, 4, 8, 5, 0, 2, 7, 6, 2, 4, 5, 8, 0, 8, 3, 2, 1, 2, 7, 9, 1, 9, 4, 0, 5, 7, 0, 0, 7, 4, 6, 3, 6, 1, 3, 5, 1, 6, 8, 4, 4, 9

Offset: 0

N. J. A. Sloane

			tan (Pi^2 / 180) = 0.0548861508080033288...

Cf. A051553, A051554, A051557-A051559.

tan(Pi^2/180) \\ Charles R Greathouse IV, Nov 05 2017

A051554 Decimal expansion of cos(Pi degrees). (Of course, cos(Pi radians) = -1.)

Original entry on oeis.org

9, 9, 8, 4, 9, 7, 1, 4, 9, 8, 6, 3, 8, 6, 3, 8, 3, 3, 6, 3, 5, 7, 6, 4, 4, 8, 5, 4, 0, 8, 8, 0, 5, 0, 6, 8, 1, 0, 1, 3, 6, 2, 3, 2, 0, 2, 6, 7, 3, 8, 6, 5, 0, 3, 5, 1, 6, 5, 7, 7, 0, 8, 3, 4, 0, 8, 7, 8, 9, 7, 4, 8, 0, 4, 6, 7, 8, 0, 3, 7, 4, 0, 4, 3, 2, 5, 9, 1, 8, 8, 9, 5, 5, 3, 9, 7, 7, 6, 3

Offset: 0

N. J. A. Sloane

			cos( Pi^2 / 180 ) = .99849714986...

Cf. A051553, A051555, A051557-A051559.

RealDigits[Cos[Pi Degree],10,120][[1]] (* Harvey P. Dale, May 28 2014 *)

cos(Pi^2/180) \\ Charles R Greathouse IV, Nov 05 2017

A051557 Decimal expansion of cos(Pi/2 degrees). (Of course, cos(Pi/2 radians) = 0.)

Original entry on oeis.org

9, 9, 9, 6, 2, 4, 2, 1, 6, 8, 5, 9, 4, 8, 1, 6, 0, 9, 4, 7, 6, 7, 2, 2, 4, 0, 3, 4, 8, 9, 5, 2, 5, 5, 9, 5, 9, 0, 0, 7, 1, 3, 7, 3, 5, 0, 7, 1, 2, 2, 2, 3, 6, 1, 8, 0, 8, 1, 2, 7, 1, 9, 5, 2, 7, 9, 2, 8, 6, 0, 1, 6, 6, 9, 3, 3, 3, 3, 2, 9, 9, 2, 9, 4, 9, 7, 3, 7, 9, 6, 8, 9, 1, 4, 4, 4, 2, 9, 6

Offset: 0

N. J. A. Sloane

			0.999624216...

Cf. A051553-A051555, A051558, A051559.

Maple
```
evalf(cos(Pi^2/360)) ;
```

RealDigits[Cos[Pi/2 Degree],10,120][[1]] (* Harvey P. Dale, Sep 21 2011 *)

cos(Pi^2/360) \\ Charles R Greathouse IV, Nov 05 2017

A051558 Decimal expansion of sin(Pi/2 degrees). (Of course, sin(Pi/2 radians) = 1.)

Original entry on oeis.org

0, 2, 7, 4, 1, 2, 1, 3, 3, 5, 9, 2, 0, 4, 4, 2, 9, 3, 5, 1, 7, 7, 8, 8, 4, 8, 8, 1, 9, 6, 4, 5, 2, 6, 0, 4, 5, 0, 1, 7, 8, 5, 1, 5, 2, 5, 2, 7, 2, 1, 8, 4, 1, 0, 4, 4, 0, 4, 9, 3, 6, 9, 4, 7, 5, 5, 2, 1, 8, 3, 3, 0, 8, 6, 9, 9, 0, 3, 8, 5, 9, 4, 2, 1, 5, 6, 2, 4, 1, 3, 3, 1, 6, 1, 7, 9, 4, 3, 1

Offset: 0

N. J. A. Sloane

Cf. A051553-A051555, A051557, A051559.

Join[{0},RealDigits[Sin[Pi/2 Degree],10,120][[1]]] (* Harvey P. Dale, Mar 15 2013 *)

sin(Pi^2/360) \\ Charles R Greathouse IV, Nov 06 2017

cp's OEIS Frontend

A051553 Decimal expansion of sin (Pi degrees). (Of course sin (Pi radians) = 0.)

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A051555 Decimal expansion of tan(Pi degrees). (Of course, tan(Pi radians) = 0.)

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PARI

A051554 Decimal expansion of cos(Pi degrees). (Of course, cos(Pi radians) = -1.)

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Mathematica

PARI

A051557 Decimal expansion of cos(Pi/2 degrees). (Of course, cos(Pi/2 radians) = 0.)

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Maple

Mathematica

PARI

A051558 Decimal expansion of sin(Pi/2 degrees). (Of course, sin(Pi/2 radians) = 1.)

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Mathematica

PARI