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JEE Mains · Maths · STD 11 - 10.2 parabola,ellipse,hyperbola

माना अतिपरवलय \(\frac{x^{2}}{9}-\frac{y^{2}}{4}=1\) पर दो भित्र बिंदु \(P(3 \sec \theta, 2 \tan \theta)\) तथा \(Q(3 \sec \phi, 2 \tan \phi)\) हैं, जहाँ \(\theta+\phi=\frac{\pi}{2}\) है, तो \(P\) तथा \(Q\) पर खींचे गए अभिलंबों के प्रतिच्छेदन बिंदु की कोटि (ordinate) है

  1. A \(\frac{11}{3}\)
  2. B \(-\frac{11}{3}\)
  3. C \(\frac{13}{2}\)
  4. D \(-\frac{13}{2}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(-\frac{13}{2}\)

Step-by-step Solution

Detailed explanation

Let the coordinate at point of intersection of normal at \(P\) and \(Q\) be \((h,k)\) Since, equation of normal to the hyperbola \(\,\frac{{{x^2}}}{{{a^2}}} - \frac{{{y^2}}}{{{b^2}}} = 1\) At point \(\left( {{x_1},{y_1}} \right)\) is…
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