જો $\tan \theta = \frac{x \sin \phi}{1 - x \cos \phi}$ અને $\tan \phi = \frac{y \sin \theta}{1 - y \cos \theta}$ હોય,તો $\frac{x}{y} = $

  • A
    $\frac{\sin \phi}{\sin \theta}$
  • B
    $\frac{\sin \theta}{\sin \phi}$
  • C
    $\frac{\sin \phi}{1 - \cos \theta}$
  • D
    $\frac{\sin \theta}{1 - \cos \phi}$

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$\frac{\cos A}{1 - \sin A} = $

$\tan 9^{\circ} - \tan 27^{\circ} - \tan 63^{\circ} + \tan 81^{\circ}$ નું મૂલ્ય શું છે?

જો $\sin A + \sin^2 A = 1$ હોય,તો $\cos^2 A + \cos^4 A$ ની કિંમત શોધો.

જો $a \cos \theta + b \sin \theta = p$ અને $a \sin \theta - b \cos \theta = q$ હોય,તો $a, b, p$ અને $q$ વચ્ચેનો સંબંધ શું છે?

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