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

रेखा \(12 x \cos \theta+5 y \sin \theta=60\) निम्न में से किस वक्र की स्पर्श रेखा है?

  1. A \(x^{2}+y^{2}=169\)
  2. B \(144 x^{2}+25 y^{2}=3600\)
  3. C \(25 x^{2}+12 y^{2}=3600\)
  4. D \(x^{2}+y^{2}=60\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(144 x^{2}+25 y^{2}=3600\)

Step-by-step Solution

Detailed explanation

\(12 x \cos \theta+5 y \sin \theta=60\) \(\frac{x \cos \theta}{5}+\frac{y \sin \theta}{12}=1\) is tangent to \(\frac{x^{2}}{25}+\frac{y^{2}}{144}=1\) \(144 \mathrm{x}^{2}+25 \mathrm{y}^{2}=3600\)
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