3.4․6 Tangents and Normals
Condition: a plane with an equation \ (5 x-8 y-7 z-58 = 0 \) and point \ (p (7; -7; -15) \) are given. Find a point, symmetrical \ (p \) relative to this plane.
Solving Problems in Three-Dimensional Space Using Tangents and Normals, Both Straight Lines and Planes.