Hello, I am trying to build a program that approximates the value of cosine - this is my program so far. It is not returning the right values. Could you tell me what I am doing wrong?
def main(): import math print("This program approximates the cosine of x by summing") print("the terms of this series: x^0 / 0!, -x^2 / 2!,") print("x^4 / 4!, -x^6 / 6!...") n = eval(input("How many terms should be used? ")) x = eval(input("What value should be used for x? ")) s = 1 d = 1 e = 1 value = 0 for i in range(n - 1): value = value + s + (x**e / math.factorial(d)) s = s * 1 e = e + 2 d + d + 2 print("Approximation for cos(x) calculated by this program: ") print(value) print() difference = math.cos(x) - value print("Difference between this value and math.cos(x): ") print(difference) main() Thank you! C.Skinner _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor