Cos70

Cos70

Input
cos(70°)
Exact result
sin(pi/9)
Decimal approximation
0.342020143325668733044099614682259580763083367514160628465…
Reference triangle for angle 70°
width | cos(70 °) = sin(20 °)~~0.34202
height | sin(70 °) = cos(20 °)~~0.939693
Continued fraction
[0; 2, 1, 12, 8, 17, 1, 1, 2, 1, 1, 1, 49, 1, 20, 3, 5, 735, 1, 2, 2, 6, 1, 1, 1, 6, 2, 2, 2, …]
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