matlab求一个向量组与一个向量夹角

% 计算两个向量的夹角
vector1 = [1, 2, 3];
vector2 = [4, 5, 6];
angle = acosd(dot(vector1, vector2) / (norm(vector1) * norm(vector2))); % 输出：角度值

% 计算平面的法向量
point1 = [x1, y1, z1];
point2 = [x2, y2, z2];
point3 = [x3, y3, z3];
vector1 = point2 - point1;
vector2 = point3 - point1;
normal_vector = cross(vector1, vector2); % 输出：法向量