In the python.org math library, I could only find
x = math.cos(1)
y = x * 180 / math.pi
Python includes two functions in the
radians converts degrees to radians, and
degrees converts radians to degrees.
To match the output of your calculator you need:
>>> math.cos(math.radians(1)) 0.9998476951563913
Note that all of the trig functions convert between an angle and the ratio of two sides of a triangle. cos, sin, and tan take an angle in radians as input and return the ratio; acos, asin, and atan take a ratio as input and return an angle in radians. You only convert the angles, never the ratios.