# C Program to Find the Sum of Cos Series

This C program is to find the sum of cos series given x and n

```
#include<stdio.h>
main()
{
int i,n,x;
float t,s;
printf("enter the value of x,n n");
scanf("%d%d",&x,&n);
t=1;
s=1;
for(i=1;i<=n;i++)
{
t=(-1)*((x*x)*t*i)/((2*i)*((2*i-1)*i));
s=s+t;
printf("s=%6.2f & t=%6.2fn",s,t);
}
printf("n sum of the cos series=%5.2fn",s);
}
```

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