Maths-
General
Easy
Question
Angle between tangents drawn from the point (1, 4) to the parabola y2 = 4x is
- 30°
- 45°
- 60°
- 90°
The correct answer is: 60°
y2 = 4x; any tangent to parabola
y = mx +
(for a = 1)
It passes through (1, 4) so m2 – 4m + 1 = 0
tan θ = 
= 
= 
θ = 60°
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