What is the shortest distance between the two skew lines and ?

Answer and explanation

Correct answer: D.

.
Magnitude: .
  1. Step 1: Identify point vectors , , so .
  2. Step 2: Compute the cross product of the direction vectors and :
  3. Step 3: Calculate dot product: . Distance .
Answer
.
Why not the others: uses incorrect vector cross product magnitudes; is an arithmetic error; ignores directional components.

Practise more Three dimensional geometry.

Free questions with an explanation for every one, and full timed JEE Main mock tests.