Answer: 1:2.
- A 1:2
- B 2:1
- C 1:1
- D 3:1
Correct answer: A. 1:2
Explanation: Point dividing AB in ratio k:1: ((5k+2)/(k+1),(4k+1)/(k+1),(6k+3)/(k+1)). Sum = (15k+6)/(k+1) = 9. So 15k+6 = 9k+9, 6k = 3, k = 1/2. Ratio = 1:2.
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