Question

Write a Main function and a Function to compute and print the sine and cosine values of the array A elements which are angles in degrees.

Within the MAIN function:

• Declare a float array A to hold 50 angles in degrees.

• Initialize array A elements from the standard input.

• Pass the array A to the function as an argument.

Within the function:

• Read array A elements and compute and print the sine and cosine values of the array A elements which are greater than 0 and less than 120 degrees? ( Pi=3.14)

Answer 1

tri.c :

#include <stdio.h>
#include <math.h>
#define PI 3.14159265
void trigo(float A[]);
void main()
{
int i;
float A[50];

printf("Enter angles in degrees\n");
for(i=0;i<50;i++)
{
scanf("%f",&A[i]);
}
trigo(A);
}
void trigo(float A[])
{
int i;
double c,s,val;
val = PI / 180;
for(i=0;i<50;i++)
{
if((A[i]>0) && (A[i]<120))
{
s = sin(A[i]*val);
c = cos(A[i]*val);
printf("The sine of %f is %lf\n",A[i],s);
printf("The cosine of %f is %lf\n",A[i],c);
}
}
}

//compile using $ gcc tri.c -lm