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Joint Entrance Examination
Mathematics
Parabola
Question 181
Question 181 of 198
Easy
MCQ
If two tangents drawn from a point P to the parabola y2 = 16(x - 3) are at right angles, then the locus of point P is :
A
x + 3 = 0
B
x + 1 = 0
C
x + 2 = 0
D
x + 4 = 0
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Official solution
Locus is directrix of parabola x - 3 + 4 = 0 \[\Rightarrow\] x + 1 = 0.
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