JEE Main 2024 Mathematics question
Let d be the distance of the point of intersection of the lines and from the point (7, 8, 9). Then d² + 6 is equal to:
Answer: (C)
Solution
The lines meet at (3, 6, 2) (parameters 3 and −1); the distance² from (7, 8, 9) is 16 + 4 + 49 = 69, so d² + 6 = 75.