Answer: (2,3,4).
- A A itself
- B (2,3,4)
- C (3,4,2)
- D B itself
Correct answer: B. (2,3,4)
Explanation: Direction AB=(3,3,3) or (1,1,1). Parametric: (1+t,2+t,3+t). On plane: (1+t)+(2+t)+(3+t) = 9, so 6+3t = 9, t = 1. Point = (2,3,4).
Three mutually perpendicular axes x, y, z meeting at the origin O, with a point P located by its (x, y, z) coordinates.
Concept context
Lines and planes in 3D space, direction cosines, distances, and angles