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JEE Mains · Maths · STD 11 - 3. trignometrical ratios,functions and identities

दी गई आकृति में \(\theta_1+\theta_2=\frac{\pi}{2}\) तथा \(\sqrt{3}(\mathrm{BE})=4(\mathrm{AB})\) है। यदि \(\triangle \mathrm{CAB}\) का क्षेत्रफल \(2 \sqrt{3}-3\) वर्ग इकाई है, जब \(\frac{\theta_2}{\theta_1}\) अधिकतम है, तो \(\triangle \mathrm{CED}\) का परिमाप (इकाई में) बराबर है :

  1. A \(5\)
  2. B \(4\)
  3. C \(6\)
  4. D \(3\)
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Answer & Solution

Correct Answer

(C) \(6\)

Step-by-step Solution

Detailed explanation

\(\sqrt{3} BE =4 AB\) \(Ar (\triangle CAB )=2 \sqrt{3}-3\) \(\frac{1}{2} x ^2 \tan \theta_1=2 \sqrt{3}-3\) \(BE = BD + DE\) \(= x \left(\tan \theta_1+\tan \theta_2\right)\) \(BE = AB \left(\tan \theta_1+\cot \theta_1\right)\)…
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