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Black Advanced Problems in Mathematics
Exam
Black Advanced Problems in Mathematics
Subject
Mathematics
Chapter
Quadratic Equation

Black Advanced Problems in Mathematics · Mathematics · Quadratic Equation

In a Δ ABC (A)/(2), (B)/(2), (C)/(2) are in H.P., then the value of...

In a ΔABCtan⁡A2,tan⁡B2,tan⁡C2\Delta ABC\tan \frac{A}{2}, \tan \frac{B}{2}, \tan \frac{C}{2} are in H.P., then the value of cot⁡A2cot⁡C2\cot \frac{A}{2} \cot \frac{C}{2} is :

Options

  1. A3
  2. B2
  3. C1
  4. D3\sqrt{3}.

Correct answer

A. 3

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