#include #include #define PI 3.14159265 /* Solving SSS Triangles - Coordinate version i.e. Given three points (coordinates) on a graph, calculate the angle of the resultant triangle */ int main() { float c1[2] = {2,1}; float c2[2] = {1,5}; float c3[2] = {1,3}; float x, y, z; float X, Y, Z; x = sqrt((pow(c1[0] - c2[0], 2)) + (pow(c1[1] - c2[1], 2))); y = sqrt((pow(c1[0] - c3[0], 2)) + (pow(c1[1] - c3[1], 2))); z = sqrt((pow(c2[0] - c3[0], 2)) + (pow(c2[1] - c3[1], 2))); X = acos((pow(y,2) + pow(z,2) - pow(x,2)) / (2*y*z)) * 180/PI; Y = acos((pow(z,2) + pow(x,2) - pow(y,2)) / (2*z*x)) * 180/PI; Z = acos((pow(x,2) + pow(y,2) - pow(z,2)) / (2*x*y)) * 180/PI; std::cout << "Coordinates : " << std::endl; std::cout << " c1 = " << c1[0] << ", " << c1[1] << std::endl; std::cout << " c2 = " << c2[0] << ", " << c2[1] << std::endl; std::cout << " c3 = " << c3[0] << ", " << c3[1] << std::endl << std::endl; std::cout << "Triangle of sides : " << std::endl; std::cout << " x = " << x << std::endl; std::cout << " y = " << y << std::endl; std::cout << " z = " << z << std::endl << std::endl; std::cout << "Angles : " << std::endl; std::cout << " Opposite x = " << X << std::endl; std::cout << " Opposite y = " << Y << std::endl; std::cout << " Opposite z = " << Z << std::endl; return 0; }

Solving SSS Triangles (Coord' ver)