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there are different ways of writing dis program... 1+x+(x*x)+(x*x*x*)+....has a formula for its sum... the sum for a geometric series with a as initial value and x as common ratio is (a*(pow(r,n)-1))/(r-1).... where a=1;r=x.. accept the values of x and n through keyboard remember to take x as a float value!! apply the formula and be careful about the parantheses. happy programming!!!
Wiki User
ā 14y ago
Wiki User
ā 15y ago#include<stdio.h>
#include<math.h>
void main()
{
float pow = 2.0, nr, dr = 1.0, x1, sum;
int i = 1,n,s = -1,x;
clrscr();
printf("\n\n\t ENTER THE ANGLE...: ");
scanf("%d", &x);
x1 = 3.142 * (x / 180.0);
sum = 1.0;
nr = x1*x1;
printf("\n\t ENTER THE NUMBER OF TERMS...: ");
scanf("%d",&n);
while(i<=n)
{
dr = dr * pow * (pow - 1.0);
sum = sum + (nr / (dr * s));
s = s * (-1);
pow = pow + 2.0;
nr = nr * x1 * x1;
i++;
}
printf("\n\t THE SUM OF THE COS SERIES IS..: %0.3f", sum);
getch();
}
Wiki User
ā 12y agojust get away
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