If $\vec{a}, \vec{b}, \vec{c}$ are three non-coplanar mutually perpendicular unit vectors, then $\le

Question

If $\vec{a}, \vec{b}, \vec{c}$ are three non-coplanar mutually perpendicular unit vectors, then $\left[\begin{array}{lll}\vec{a} & \vec{b} & \vec{c}\end{array}\right]$ is

Professor PC Thomas Classes · Answer

Scalar triple product of mutually perpendicular unit vectors forms an orthonormal basis, determinant is $\pm 1$. Magn is 1.