updating oE cos
cos
<builtin> function cos(object angle)
returns the cosine of an angle expressed in radians.
Parameters:
 angle : an object, each atom of which will be converted, no matter how deeply nested.
Returns:
An object, the same shape as angle. Each atom in angle is turned into its cosine.
Comments:
This function may be applied to an atom or to all elements of a sequence.
The cosine of an angle is an atom between 1 and 1 inclusive. 0.0 is hit by odd multiples of PI/2 only.
Example 1:
x = cos({.5, .6, .7})  x is {0.8775826, 0.8253356, 0.7648422}
See Also:
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