cos:
Cos is short for cosine, mathematical trigonometric function of an angle. The cosine of an angle is defined in the context of a right triangle: it is the ratio of the length of the adjacent side of the angle to the length of the hypotenuse.
Cos is short for cosine, mathematical trigonometric function of an angle. The cosine of an angle is defined in the context of a right triangle: it is the ratio of the length of the adjacent side of the angle to the length of the hypotenuse.
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