JEE Main 2025 Mathematics question
If the four distinct points (4, 6), (–1, 5), (0, 0) and (k, 3k) lie on a circle of radius r, then is equal to
Answer: (4)
Solution
; equation of circle ; substituting gives ; so
If the four distinct points (4, 6), (–1, 5), (0, 0) and (k, 3k) lie on a circle of radius r, then is equal to
; equation of circle ; substituting gives ; so