JEE Main 2021 Mathematics question
If for a > 0, the feet of perpendiculars from the points A(a, –2a, 3) and B(0, 4, 5) on the plane are points C(0, –a, –1) and D respectively, then the length of line segment CD is equal to :
Answer: (D)
If for a > 0, the feet of perpendiculars from the points A(a, –2a, 3) and B(0, 4, 5) on the plane are points C(0, –a, –1) and D respectively, then the length of line segment CD is equal to :