If is the foot of the perpendicular from to the plane

MATHEMATICS · Single correct · ISC · Mathematics · Three-Dimensional Geometry · Three-Dimensional Geometry

Problem

If BB is the foot of the perpendicular from AA to the plane r⋅n^=d\mathbf{r}\cdot\hat{\mathbf{n}}=d, then BB must be (1) A+(d−A⋅n^)n^A+(d-A\cdot\hat{\mathbf{n}})\hat{\mathbf{n}} (2) A−(d−A⋅n^)n^A-(d-A\cdot\hat{\mathbf{n}})\hat{\mathbf{n}} (3) A+A⋅n^A+A\cdot\hat{\mathbf{n}} (4) A−A⋅n^A-A\cdot\hat{\mathbf{n}}

Related theory

Browse the problem library