જો $\cos \theta = \frac{-3}{5}$ અને $\pi < \theta < \frac{3\pi}{2}$ હોય,તો $\tan \frac{\theta}{2} + \sin \frac{\theta}{2} + 2 \cos \frac{\theta}{2} =$

  • A
    $-1$
  • B
    $1$
  • C
    $-2$
  • D
    $2$

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$\tan \left( \frac{\pi }{4} + \theta \right) - \tan \left( \frac{\pi }{4} - \theta \right) = $

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$\tan \frac{\pi}{8}$ નું મૂલ્ય શું છે?

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