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, …] |