Cosine series

• Problem Description

  
  Python Program to Find the Sum of Cosine Series
  
  Input:
  First Line : Value of x in degrees
  Second Line :Number of terms
  
  Output:
  Print the Sum of Cosine Series

• CODING ARENA

• import math

  def cosine(x,n):

      cosx = 1

      sign = -1

      for i in range(2, n, 2):

          pi=22/7

          y=x*(pi/180)

          cosx = cosx + (sign*(y**i))/math.factorial(i)

          sign = -sign

      return cosx

  x=int(input())

  n=int(input())

  print(round(cosine(x,n),2))

• Test Case 1

  
  Input (stdin)

  65
  
  10
  
  

  Expected Output

  0.42

• Test Case 2

  
  Input (stdin)

  75
  
  15
  
  

  Expected Output

  0.26