જો $A$ બીજા ચરણમાં હોય અને $3\tan A + 4 = 0$ હોય,તો $2\cot A - 5\cos A + \sin A$ ની કિંમત શોધો.

  • A
    $\frac{-53}{10}$
  • B
    $\frac{-7}{10}$
  • C
    $\frac{7}{10}$
  • D
    $\frac{23}{10}$

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જો $\tan A = 2\tan B + \cot B$ હોય,તો $2\tan (A - B) = $

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