C Program to find area of scalene triangle

User enters integer values for variable 'side_one', 'side_two' and 'angle', finds the area of a scalene triangle with formula $$area = (a \times b) \times \frac{sin((\frac{\pi}{180}) \times angle))}{2}$$ The value stored at variable 'area' is printed on the console.

Program

#include<stdio.h>
#include<math.h>
void main()
{
	int side_one, side_two, angle;
	float area;
	printf("Enter Side 1:\t");
	scanf("%d", &side_one);
	printf("Enter Side 2:\t");
	scanf("%d", &side_two);
	printf("Enter the angle:\t");
	scanf("%d", &angle);
	area = (side_one * side_two * sin((M_PI / 180) * angle)) / 2;
	printf("Area of Scalene Triangle: %f\n", area);
}

Output

Enter Side 1:	12
Enter Side 2:	8
Enter the angle:	36
Area of Scalene Triangle: 28.213692