$\tan \frac{\pi}{8}$ ની કિંમત શોધો.

  • A
    $\sqrt{2} + 1$
  • B
    $\sqrt{2} - 1$
  • C
    $\sqrt{3} - 1$
  • D
    $\sqrt{3} + 1$

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સાબિત કરો કે: $\cos 6x = 32 \cos^6 x - 48 \cos^4 x + 18 \cos^2 x - 1$

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

જો $\sin \theta = -\frac{3}{4}$ હોય,તો $\sin 2 \theta = $

$(\sec 2A + 1)\sec^2 A = $

જો $\tan \alpha = \frac{-12}{5}$,$\cot \beta = \frac{7}{24}$,$\alpha$ બીજા ચરણમાં નથી અને $\beta$ પ્રથમ ચરણમાં નથી,તો $\sqrt{13} \sin \frac{\alpha}{2} + \cos \frac{\beta}{2} + \tan \frac{\alpha}{2} \cot \frac{\beta}{2} = $

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