જો $\tan \theta = \frac{1}{\sqrt{11}}$ અને $0 < \theta < \frac{\pi}{2}$ હોય,તો $\frac{\operatorname{cosec}^{2} \theta - \sec ^{2} \theta}{\operatorname{cosec}^{2} \theta + \sec ^{2} \theta}$ ની કિંમત શોધો.

  • A
    $\frac{3}{4}$
  • B
    $\frac{4}{5}$
  • C
    $\frac{5}{6}$
  • D
    $\frac{6}{7}$

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જો $\tan A = - \frac{1}{2}$ અને $\tan B = - \frac{1}{3}$ હોય,તો $A + B = $

જો $\cos (\alpha + \beta ) = \frac{4}{5}, \sin (\alpha - \beta ) = \frac{5}{13}$ અને $\alpha, \beta$ એ $0$ અને $\frac{\pi}{4}$ ની વચ્ચે હોય,તો $\tan 2\alpha = $

$\tan \left( \frac{\pi }{4} + \theta \right) - \tan \left( \frac{\pi }{4} - \theta \right) = $

$\cos ^{2} \theta+\sec ^{2} \theta$ નું મૂલ્ય હંમેશા

જો $A + B + C = 180^\circ$ હોય,તો $\frac{\sin 2A + \sin 2B + \sin 2C}{\cos A + \cos B + \cos C - 1} = $

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