Find the equation of the chord of contact of tangents to the parabola
y2 = 4x from the point P(3,4).
x−2y−3=0
Equation to the chord of contact of tangents drawn from the point P(x1, y1) is T = 0
yy1 − 2a(x + x1) = 0
Here,
x1 = 3 y1 = 4
y(4) − 2(x + 3) = 0
4y − 2x + 6 = 0
2x − 4y − 6 = 0 or x − 2y − 3 = 0