19. Equation of the focal chord of the parabola
Inclined an angle
with the x-axis
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Focal Chord of a Parabola
The chord of the parabola which passes through the focus is called the focal chord. Any chord to y2 = 4ax which passes through the focus is called a focal chord of the parabola y2 = 4ax. Let y2 = 4ax be the equation of a parabola and (at2, 2at) a point P on it.
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