કિંમત શોધો: $\cos^2 \left( \frac{\pi}{4} - \beta \right) - \sin^2 \left( \alpha - \frac{\pi}{4} \right)$

  • A
    $\sin(\alpha + \beta)\sin(\alpha - \beta)$
  • B
    $\cos(\alpha + \beta)\cos(\alpha - \beta)$
  • C
    $\sin(\alpha - \beta)\cos(\alpha + \beta)$
  • D
    $\sin(\alpha + \beta)\cos(\alpha - \beta)$

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Similar Questions

પદાવલિ $\frac{\tan^2 20^\circ - \sin^2 20^\circ}{\tan^2 20^\circ \cdot \sin^2 20^\circ}$ નું સાદું રૂપ શું થાય?

જો $\tan \beta = \frac{\tan \alpha + \tan \gamma}{1 + \tan \alpha \tan \gamma}$ હોય,તો $\frac{\sin 2 \alpha + \sin 2 \gamma}{1 + \sin 2 \alpha \sin 2 \gamma} = $

જો $x=\log _e\left[\cot \left(\frac{\pi}{4}+\theta\right)\right]$ અને $\theta \in\left(\frac{-\pi}{4}, \frac{\pi}{4}\right)$ હોય,તો નીચેના વિધાનો ધ્યાનમાં લો:
$I$ : $\cosh x=\sec 2 \theta$
$II$ : $\sinh x=-\tan 2 \theta$
તો નીચેનામાંથી કયો વિકલ્પ સાચો છે?

જો $\sin \theta + \cos \theta = m$ અને $\sec \theta + \text{cosec} \theta = n$ હોય,તો $n(m + 1)(m - 1) = $

જો $\tan \theta + \sin \theta = m$ અને $\tan \theta - \sin \theta = n$ હોય,તો

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