Maths-
General
Easy
Question
Two perpendicular tangents to y2 = 4ax always intersect on the line, if
- x = a
- x + a = 0
- x + 2a = 0
- x + 4a = 0
The correct answer is: x + a = 0
Two perpendicular tangents to y2 = 4ax always intersect on directrix
x = – a 
x + a = 0
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physics-General
