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

જો \(A> 0, B > 0\) અને \(A + B = \frac{\pi }{6}\), હોય તો \(tan\,A + tan\,B\)  ની ન્યૂનતમ કિમત મેળવો.

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

Answer & Solution

Correct Answer

(B) \( 4  - 2\sqrt 3 \)

Step-by-step Solution

Detailed explanation

\(\tan \,(A + B)\, = \,\frac{{\tan \,A\, + \tan \,B}}{{1 - \tan \,A\,\tan \,B}}\) \( \Rightarrow \,\frac{1}{{\sqrt 3 }}\, = \,\frac{y}{{1 - \tan \,A\,\tan \,B}}\) where \(y\, = \tan \,A\, + \tan \,B\) \( \Rightarrow \tan \,A\,\tan \,B\, = \,1 - \sqrt 3 y\) Also…
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