You jest but this is a computationally slow algorithm that only works for right angle triangles in a Cartesian space. There’s very reasonable and fast trigonome

You jest but this is a computationally slow algorithm that only works for right angle triangles in a Cartesian space. There’s very reasonable and fast trigonometric approximations. The general form would be the cosine law which applies to any triangle. We can derive this from more abstract metrics over an inner product space.. a sort of vector space of any dimension.