Cos140

Cos140

Input
cos(140°)
Decimal approximation
-0.76604444311897803520239265055541667393583245708039524585…
Reference triangle for angle 140°
width | cos(140 °) = -cos(40 °)~~-0.766044
height | sin(40 °)~~0.642788
Alternate form
-cos((2 pi)/9)
Continued fraction
– [0; 1, 3, 3, 1, 1, 1, 4, 1, 1, 3, 3, 23, 1, 1, 5, 1, 4, 73, 111, 40, 1, 2, 15, 5, 1, 1, 2, …]

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