CODEWITHSUNDEEP
python
user2284295
user2284295

Reputation:

Archimedes PI Approximation in Python

enter image description here

Here is my code thus far,

from math import *

def main():
    sides = eval(input("Enter the number of sides:"))

    value = 360/(2 * sides)
    sinvalue = sin(value)
    PI = sinvalue * sides

    print("Approximate value of pi =", PI)

However, I am not getting the proper value that is in the sample code.

Upvotes: 1

Views: 1946

Answers (1)

wim
wim

Reputation: 362687

math.sin expects angles to be specified in radians. 

>>> print(math.sin.__doc__)
sin(x)

Return the sine of x (measured in radians).

You are specifying it in degrees. Specify the angle in radians instead:

value = math.pi / sides

Or, if you don't want to use math.pi so explicitly, use the helper function to convert units:

value = math.radians(360/(2*sides))

Upvotes: 3

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