If is the locus of a point, which moves such that it is always equidistant from the lines and , then the value of equals
- (A)14✓ Correct
- (B)6
- (C)8
- (D)29
Answer: (A)
Solution
A point equidistant from and satisfies
.
Taking the sign: .
Taking the sign: .
The full locus is the pair of lines . Expanding:
.
Dividing by 3 to match the given form :
.
So , , , .
.
.
Taking the sign: .
Taking the sign: .
The full locus is the pair of lines . Expanding:
.
Dividing by 3 to match the given form :
.
So , , , .
.
JEE Main · 2024 · 30 Jan 2024 · Shift 2 · Single correct option