Question
Question: If q be the angle subtended at the focus by the normal chord at the point (l, l), l ¹ 0 on the parab...
If q be the angle subtended at the focus by the normal chord at the point (l, l), l ¹ 0 on the parabola y2 = 4ax, then equation of the line through (1, 2) and making and angle q with x-axis is
A
x = 1
B
y = 2
C
x + 2y – 3 = 0
D
None
Answer
x = 1
Explanation
Solution
For P point : at2 = 2at Ž t = 2
Ž P : (4a, 4a)
Q : (9a, – 6a) Ž q = 900