$\cos 105^\circ + \sin 105^\circ$ નું મૂલ્ય શું છે?

  • A
    $\frac{1}{2}$
  • B
    $1$
  • C
    $\sqrt{2}$
  • D
    $\frac{1}{\sqrt{2}}$

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$\frac{{\tan A + \sec A - 1}}{{\tan A - \sec A + 1}} = $

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