જો $\theta$ એ અંતરાલ $\left(0, \frac{\pi}{2}\right)$ માં હોય અને સમીકરણ $\cos 2 \theta \cdot \sec ^4 \theta + \sec ^2 \theta = 0$ નું સમાધાન કરતું હોય,તો $\sin ^2 \theta =$

  • A
    $\frac{1}{3}$
  • B
    $\frac{3}{4}$
  • C
    $\frac{1}{2}$
  • D
    $\frac{2}{3}$

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Similar Questions

જો $\frac{\cos x}{\cos (x-2 y)}=\lambda$ હોય,તો $\tan (x-y) \tan y$ ની કિંમત શું થાય?

જો $\frac{1}{\sin 45^{\circ} \sin 46^{\circ}}+\frac{1}{\sin 46^{\circ} \sin 47^{\circ}}+\ldots$ $45$ પદો સુધી $=\frac{1}{\sin x^{\circ}}$ હોય,તો $\sin \left(\frac{\pi}{2} x\right)=$

જો $A = \frac{\sin 3^\circ}{\cos 9^\circ} + \frac{\sin 9^\circ}{\cos 27^\circ} + \frac{\sin 27^\circ}{\cos 81^\circ}$ અને $B = \tan 81^\circ - \tan 3^\circ$ હોય,તો $\frac{B}{A}$ ની કિંમત . . . . . . થાય.

$\sum\limits_{r = 1}^{89} {{\log _3}(\tan {r^\circ})} = $

જો $\cosh 2x = 199$ હોય,તો $\operatorname{coth} x =$

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