જો $\cot \alpha = \frac{1}{2}$ અને $\sec \beta = -\frac{5}{3}$,જ્યાં $\alpha \in \left(\pi, \frac{3\pi}{2}\right)$ અને $\beta \in \left(\frac{\pi}{2}, \pi\right)$ હોય,તો $\tan(\alpha + \beta)$ ની કિંમત શોધો.

  • A
    $\frac{3}{11}$
  • B
    $\frac{22}{9}$
  • C
    $\frac{9}{11}$
  • D
    $\frac{2}{11}$

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જો $A = \frac{\pi}{24}$ હોય,તો $\frac{\cos A + \cos 3A + \cos 5A + \cos 7A}{\sin A + \sin 3A + \sin 5A + \sin 7A} = $

જો $\tan A=\frac{1}{\sqrt{x(x^2+x+1)}}, \tan B=\frac{\sqrt{x}}{\sqrt{x^2+x+1}}$ અને $\tan C=\sqrt{x^{-1}+x^{-2}+x^{-3}}$ હોય,તો:

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