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  1. x = 15
  2. for i in range(30):
  3. x = cos(tan(x))
  4. print(x)# your code goes here
Runtime error #stdin #stdout #stderr 0.02s 9420KB
stdin
Standard input is empty
stdout
Standard output is empty
stderr
Traceback (most recent call last):
  File "./prog.py", line 3, in <module>
NameError: name 'cos' is not defined