જો $A, B, C$ લઘુકોણ ધન ખૂણાઓ હોય કે જેથી $A + B + C = \pi$ અને $\cot A \cot B \cot C = K$ થાય,તો:

  • A
    $K \le \frac{1}{3\sqrt{3}}$
  • B
    $K \ge \frac{1}{3\sqrt{3}}$
  • C
    $K < \frac{1}{9}$
  • D
    $K > \frac{1}{3}$

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જો $A+B+C=2S$ હોય,તો $\sin(2S-A)+\sin(2S-B)+\sin(2S-C)-\sin(2S) = $

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