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0.5735764264 (nearest 10 decimal places).
The cosine of 20 degrees is 0.93969262
cos(55) = 0.022126756261956
The value of cos 46 degrees is approximately 0.7193. Cosine is a trigonometric function that represents the ratio of the adjacent side to the hypotenuse in a right triangle. In this case, when the angle is 46 degrees, the cosine value is calculated by dividing the length of the adjacent side by the length of the hypotenuse.
Cosine(42 radians) = -0.399985 Cosine(42 degrees) = 0.743146