Cos 165

Cos 165

Input
cos(165°)
Exact result
-(1 + sqrt(3))/(2 sqrt(2))
Decimal approximation
-0.96592582628906828674974319972889736763390483900840455040…
Reference triangle for angle 165°
width | cos(165 °) = -(1 + sqrt(3))/(2 sqrt(2))~~-0.965926
height | sin(165 °) = (sqrt(3) – 1)/(2 sqrt(2))~~0.258819
Continued fraction
– [0; 1, 28, 2, 1, 7, 21, 1, 8, 1, 3, 10, 1, 2, 3, 1, 8, 2, 1, 2, 2, 2, 1, 5, 2, 1, 4, 1, 1, 3, …]
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