The math.asinh() function returns the inverse hyperbolic sine of a given number. 

math.asinh(x)

Where x is a numeric value.

import math

x = 2.0
result = math.asinh(x)
print(result)

Note that the math.asinh() function returns the result in radians. If you need the result in degrees, you can convert it using the math.degrees() function.

import math

x = 2.0
result = math.asinh(x)
print(math.degrees(result))