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Question

Angle between the tangents drawn from the origin to the parabola y2=4a(xa) is

A
30
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B
45
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C
60
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D
90
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Solution

The correct option is D 90
Since the parabola is y2=4a(xa)
Here, the vertex is (a,0)
The equation of directrix will be xa=ax=0
Since the pair of tangents drawn from any point on directrix are perpendicular to each other.
Therefore, angle between them is 90

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