Cos105

Cos105

Input
cos(105°)
Exact result
-(sqrt(3) – 1)/(2 sqrt(2))
Decimal approximation
-0.25881904510252076234889883762404832834906890131993051381…
Reference triangle for angle 105°
width | cos(105 °) = -(sqrt(3) – 1)/(2 sqrt(2))~~-0.258819
height | sin(105 °) = (1 + sqrt(3))/(2 sqrt(2))~~0.965926
Continued fraction
– [0; 3, 1, 6, 2, 1, 30, 5, 2, 9, 3, 1, 10, 5, 5, 2, 10, 1, 4, 1, 23, 2, 2, 1, 1, 3, 1, 4, 1, …]
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