જો $\tan^2 \theta = 2\tan^2 \phi + 1$ હોય,તો $\cos 2\theta + \sin^2 \phi$ ની કિંમત શોધો.

  • A
    $-1$
  • B
    $0$
  • C
    $1$
  • D
    આમાંથી કોઈ નહીં

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જો $\operatorname{cosec} \theta = \frac{p+q}{p-q}$ હોય,તો $\cot \left(\frac{\pi}{4} + \frac{\theta}{2}\right)$ ની કિંમત શોધો.

કિંમત શોધો: $\sin ^4 \frac{\pi}{8} + \sin ^4 \frac{3\pi}{8} + \sin ^4 \frac{5\pi}{8} + \sin ^4 \frac{7\pi}{8} = $

જો $a \cos \theta + b \sin \theta = m$ અને $a \sin \theta - b \cos \theta = n$ હોય,તો ${a^2} + {b^2} = $

$\tan 6^{\circ} \tan 42^{\circ} \tan 66^{\circ} \tan 78^{\circ} = $

$\sinh (x+y) \cosh (x-y)$ એ કોના બરાબર છે?

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