The line of greatest slope on an inclined plane $P_1$ is the line in the plane $P_1$ which is perpen

Question

The line of greatest slope on an inclined plane $P_1$ is the line in the plane $P_1$ which is perpendicular to the line of intersection of the plane $P_1$ and a horizontal plane $P_2$.

Professor PC Thomas Classes · Answer

See detailed solution for explanation.