જો $3 \sin \alpha = 5 \sin \beta$ હોય,તો $\tan \left(\frac{\alpha + \beta}{2}\right) \div \tan \left(\frac{\alpha - \beta}{2}\right) = $

  • A
    $1$
  • B
    $2$
  • C
    $3$
  • D
    $4$

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જો $\tan \left(\frac{\pi}{4}+\frac{y}{2}\right)=\tan ^3\left(\frac{\pi}{4}+\frac{x}{2}\right)$ હોય,તો $\frac{3 \sin x+\sin ^3 x}{1+3 \sin ^2 x}=$

$0 < \theta < \frac{\pi}{2}$ માટે,$\sum_{m=1}^6 \operatorname{cosec}\left(\theta+\frac{(m-1) \pi}{4}\right) \operatorname{cosec}\left(\theta+\frac{m \pi}{4}\right) = 4 \sqrt{2}$ ના ઉકેલ(ઓ) છે:

$\sin \frac{\pi}{16} \sin \frac{3 \pi}{16} \sin \frac{5 \pi}{16} \sin \frac{7 \pi}{16}$ ની કિંમત શોધો.

જો $\frac{\cos x}{\cos (x-2 y)}=\lambda$ હોય,તો $\tan (x-y) \tan y$ ની કિંમત શું થાય?

પદાવલિ $\cos^2(A - B) + \cos^2 B - 2\cos(A - B)\cos A\cos B$ એ

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