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

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

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જો $x = \log_e \left[ \cot \left( \frac{\pi}{4} + \theta \right) \right]$ જ્યાં $|\theta| < \frac{\pi}{4}$ હોય,તો $\sinh x =$

$\cos 15^\circ = $

જો $\frac{\tan 3A}{\tan A} = a$ હોય,તો $\frac{\sin 3A}{\sin A}$ ની કિંમત શોધો.

જો $\sin \theta = -\frac{3}{4}$ હોય,તો $\sin 2 \theta = $

$\sqrt{\frac{1 - \sin A}{1 + \sin A}} = $

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