$\frac{\cos A}{1 - \sin A} = $

  • A
    $\sec A - \tan A$
  • B
    $\csc A + \cot A$
  • C
    $\tan \left( \frac{\pi}{4} - \frac{A}{2} \right)$
  • D
    $\tan \left( \frac{\pi}{4} + \frac{A}{2} \right)$

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સાબિત કરો કે $\tan 3x \tan 2x \tan x = \tan 3x - \tan 2x - \tan x$.

જો $\cos A = \frac{3}{4}$ હોય,તો $32\sin \left( \frac{A}{2} \right)\sin \left( \frac{5A}{2} \right) = $

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