Question

How to implement this function in C program and at the same time convert the result to degree? Use the C program and post a screenshot, please.

cos(2*pi*a/10.0)e^(-a/10.0)

Answer 1

//required library is define
#include <stdio.h>
#include <math.h>

//a global variable PI defined whose value is 3.1429265
#define PI 3.1429265
int main () {
    //double type variable is declared
    double a;
    printf("Enter the value of a ");

    //value of a is taken as input
    scanf("%lf",&a);

    //cos() and exp() are the built in function defined in the <math.h> library
    //by default the cos() gives radian
    //by multiply the value with PI/180.0 we will get value of degree
    printf("%lf\n",cos(2*PI*a/10.0*PI/180)*exp(-a/10.0));
   return(0);
}

//screenshot is provided below