જો $\frac{\sqrt{2} \sin \alpha}{\sqrt{1+\cos 2 \alpha}}=\frac{1}{7}$ અને $\sqrt{\frac{1-\cos 2 \beta}{2}}=\frac{1}{\sqrt{10}}$ જ્યાં $\alpha, \beta \in (0, \frac{\pi}{2})$ હોય,તો $\tan (\alpha+2 \beta)$ ની કિંમત શોધો.

  • A
    $1$
  • B
    $2$
  • C
    $2.5$
  • D
    $3.5$

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જો $\sin \theta + \sin^2 \theta = 1$ હોય,તો $\cos^2 \theta + \cos^4 \theta$ ની કિંમત કેટલી થાય?

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

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