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  • Let F be the focus of parabola. From the end point (P) of focal chord is drawn to directr

Let F be the focus of parabola. From the end point (P) of focal chord PF \perp PM is drawn to directrix from P a line is drawn through the mid-point (R) of FM, then the angle between PR and FM is

Option: 1

\pi
 


Option: 2

\frac{\pi}{2}
 


Option: 3

\frac{\pi}{4}
 


Option: 4

\frac{\pi}{6}


Answers (1)

best_answer

F P=P M, \triangle P F M is isosceles so line joining P to mid point of FM will be perpendicular to FM.

Posted by

Devendra Khairwa

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