向量的叉积在立体几何中的应用

Obtaining the Normal Plane Vector by Using the Vector Algebraic Product of the Space Analytic Geometry

用向量积、行列式求平面的法向量,解决中学数学中求二面角补余问题.

obtaining the normal plane vector by using the vector product ,and determinant to solve the supplementary or complementary angle of the dihedral angle in the College Entrance Examination.