两个向量之间的夹角

本文介绍了两个向量之间的夹角的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想计算两个向量V = [Vx Vy Vz]和B = [Bx By Bz]之间的角度. 这个公式正确吗?

I want to calculate the angle between 2 vectors V = [Vx Vy Vz] and B = [Bx By Bz]. is this formula correct?

VdotB = (Vx*Bx + Vy*By + Vz*Bz) Angle = acosd (VdotB / norm(V)*norm(B))

还有其他计算方法吗?

我的问题不是要对向量进行归一化或使其变得更容易.我在问如何获得这两个向量之间的角度

My question is not for normalizing the vectors or make it easier. I am asking about how to get the angle between this two vectors

推荐答案

基于此链接，这似乎成为最稳定的解决方案:

Based on this link, this seems to be the most stable solution:

atan2(norm(cross(a,b)), dot(a,b))