area of triangle with 2 sides and angle code example

Example 1: area of a right angle triangle

#include <stdio.h>
int main(){
    float h, b, A;
    printf("What is the Height and base of the triangle: \n");
    scanf("%f %f", &h, &b);
    A = 0.5 * b *h;
    printf("Area is %f\n", A);
}

Example 2: how to find a point on a triangle with only sides

known sides AB, BC, AC
known points A(x, y), B(x, y)
unknown points C(x, y)

AC² - BC² = ((Ax - Cx)² + (Ay - Cy)²) - ((Bx - Cx)² + (By - Cy)²)


Goal: 

C.x = ?
C.y = ?