Q5)write a program to generate sine and cosine series?

Author: Sanif S S 

Site: theeduzone.blogspot.com 

Email: sanifss@gmail.com


#include<stdio.h>
#include<conio.h>

void main()
{
 clrscr();
 float term,termc,sum=0,sumc=0,x,k=0,j=1;
 int n,c,i;
 printf("menu\n");
 printf("1.sine series\n2.cosine series\n");
 printf("enter your choice\n");
 scanf("%d",&c);
 printf("enter the angle in degree\n");
 scanf("%f",&x);
 printf("enter the number of terms\n");
 scanf("%d",&n);
 x=((x*3.14)/180);
 switch(c)
 {
  case 1:
    term=x;
    for(i=1;i<=n;i++)
    {
     sum=sum+term;
     j=j+2;
     term=((term*(-1)*x*x)/(j*(j-1)));
    }
    printf("sum of the sine series=%f\n",sum);
    break;
  case 2:
    termc=1;
    for(i=1;i<=n;i++)
    {
     sumc=sumc+termc;
     k=k+2;
     termc=((termc*(-1)*x*x)/(k*(k-1)));
    }
    printf("sum of the cosine series=%f",sumc);
    break;
  default:
    printf("invalid choice");
 }
 getch();
}