જો $\tan \alpha = (1 + 2^{-x})^{-1}$ અને $\tan \beta = (1 + 2^{x+1})^{-1}$ હોય,તો $\alpha + \beta$ ની કિંમત શું થાય?

  • A
    $\pi /6$
  • B
    $\pi /4$
  • C
    $\pi /3$
  • D
    $\pi /2$

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જો $m \tan (\theta - 30^\circ) = n \tan (\theta + 120^\circ)$ હોય,તો $\frac{m + n}{m - n} = $

જો $\cos (\theta+\phi)=\frac{3}{5}$ અને $\sin (\theta-\phi)=\frac{5}{13}$, જ્યાં $0 < \theta, \phi < \frac{\pi}{4}$, તો $\cot (2 \theta)$ ની કિંમત શોધો:

$\tan 75^\circ - \cot 75^\circ = $

જો $\theta \in \left(0, \frac{\pi}{2}\right)$ માટે $\tan 3\theta \cdot \tan 2\theta \cdot \tan \theta + \tan 2\theta + \tan \theta = 1$ હોય,તો $\theta =$

$\cos ^{2} 45^{\circ}-\sin ^{2} 15^{\circ}$ નું મૂલ્ય શું છે?

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