Q - Consider the points P(4k,4k) and Q(4k, - 4k) lying on the parabola y ^ 2 = 4kx If the vertex is A, then what is angle PAQ equal to (a) 60° (b) 90° (c) 120° (d) 135°

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Answer = We have, the vertex A lies on the parabola y ^ 2 = 4kx Two points lying on the parabola are P(4k,4k) and Q(4k, - 4k) ... The coordinates of the vertex A are (0, 0)
The correct option is (b).

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