જો $\cos \alpha = \operatorname{sech} \beta$ હોય,તો $\beta =$

  • A
    $\log (\sec \alpha + \tan \alpha)$
  • B
    $\log (\sec \alpha - \tan \alpha)$
  • C
    $\log (\sin \alpha + \cos \alpha)$
  • D
    $\log (\cos \alpha + \cot \alpha)$

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જો $\cosh 2x = 199$ હોય,તો $\coth x$ 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 $\alpha, \beta$ લઘુકોણ હોય કે જેથી $\sin \beta=2 \sin \alpha$ અને $3 \cos \beta=2 \cos \alpha$ થાય,તો $\sec (\alpha+\beta)=$

જો $f(x) = \frac{\cot x}{1 + \cot x}$ અને $\alpha + \beta = \frac{5 \pi}{4}$ હોય,તો $f(\alpha) f(\beta)$ ની કિંમત શોધો.

જો $\operatorname{Sinh}^{-1} x = \operatorname{Cosh}^{-1} y = \log(1+\sqrt{2})$ હોય, તો $\operatorname{Tan}^{-1}(x+y) = $

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