Calculate the value of cos(x) FORMULA 2 minute read Intermediate Programme: #include <stdio.h> #include <math.h> #include <stdlib.h> void main() { int n, x1; float accuracy, term, denominator, x, cosx, cosval; printf("Enter the value of x (in degrees) \n"); scanf("%f",&x); x1 = x; x = x *(3.142/180.0); cosval =cos(x); printf("Enter the accuracy for the result \n"); scanf("%f",&accuracy); term =1; cosx = term; n =1; do { denominator =2* n *(2* n -1); term =-term * x * x / denominator; cosx = cosx + term; n = n +1; } while(accuracy <=fabs(cosval - cosx)); printf("Sum of the cosine series = %f\n", cosx); printf("Using Library function cos(%d) = %f\n", x1,cos(x)); } Output: Enter the value of x (in degrees) 32 Enter the accuracy for the result 5 Sum of the cosine series = 0.843995 Using Library function cos(32) = 0.848010