$\operatorname{coth}^2 x - \tanh^2 x =$

  • A
    $4 \operatorname{cosech} 2x \tanh 2x$
  • B
    $4 \operatorname{sech} 2x \operatorname{coth} 2x$
  • C
    $4 \operatorname{sech} 2x \tanh 2x$
  • D
    $4 \cosh 2x (\operatorname{cosech} 2x)^2$

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સમીકરણ $y = \sin \,x \sin \,(x + 2) - \sin^2 \,(x + 1)$ એ કયા ચરણમાં આવેલી સીધી રેખા દર્શાવે છે?

$16 \sin(20^{\circ}) \sin(40^{\circ}) \sin(80^{\circ})$ ની કિંમત શોધો.

જો $\sin (\theta-\alpha), \sin \theta$ અને $\sin (\theta+\alpha)$ એ $H.P.$ માં હોય,તો $\cos 2 \theta$ ની કિંમત શોધો.

કોઈપણ $\theta \in \left( \frac{\pi}{4}, \frac{\pi}{2} \right)$ માટે,પદાવલિ $3(\sin \theta - \cos \theta)^4 + 6(\sin \theta + \cos \theta)^2 + 4\sin^6 \theta$ ની કિંમત શોધો.

જો $\frac{2 \sin \alpha}{1+\cos \alpha+\sin \alpha}=x$ હોય,તો $\frac{1-\cos \alpha-\sin \alpha}{\cos \alpha}=$

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