Y mul pow add x1 add pow x2 div c c mul c mul x2 cos x1 c add mul c pow add x1 add pow x2 div c c mul c mul x2 cos x1 c add mul add c x2 add x1 add pow x2 div c c mul c mul x2 cos x1 mul c mul x1 mul add c mul x2 sin x1 add c x2