Hi!

I'm a beginner in Python. Please explain thoroughly how I can type in the program.

Write a Python function (not a script) that calculates the area of a circle sector. The function should take a radius, called r, and an angle given in radians, called theta (theta is the Greek letter that is also written (), as arguments, and begins like this (a so-called docstring):

def circle sector (r, theta):

"" " Parameters ---------- r: TYPE DESCRIPTION. theta: TYPE DESCRIPTION.

Returns ------- TYPE DESCRIPTION. "" "

Complete this function and test that it gives the expected answer for r = 1, = 0, pi, pi. What happens if someone uses this feature but specifies the angle in degrees instead of radians? Do we get an error message?