I messed about a bit with this excersize

The following is the fruits of my labor (I answered all the questions in one file so I do not have the iterations available sorry)

12: maths.py

  from math import sin, cos, radians as rad


num = "69"
print("Enter a number: " + num)

try:
    num = float(num)
    (sinn, cosine) = (round(sin(rad(num)), 2), round(cos(rad(num)), 2))

    print("Rounded Sin is", str(sinn))
    print("Rounded Cosine is", str(cosine))
except ValueError:
    print('Error:', num, 'is not a valid number')

  

Output

  >>> Enter a number: 69
>>> Rounded Sin is 0.93
>>> Rounded Cosine is 0.36