Maths-
General
Easy
Question
The tangent at P to a parabola y2 = 4ax meets the directrix at U and the latus rectum at V then SUV (where S is the focus) :
- must be a right triangle
- must be an equilateral triangle
- must be an isosceles triangle
- must be a right isosceles triangle
The correct answer is: must be an isosceles triangle
Alternatively: PU subtends a right angles at focus Þ isosceles
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