$\sqrt{2} + \sqrt{3} + \sqrt{4} + \sqrt{6}$ ની કિંમત શોધો.

  • A
    $\cot(7\frac{1}{2}^{\circ})$
  • B
    $\sin(7\frac{1}{2}^{\circ})$
  • C
    $\sin(15^{\circ})$
  • D
    $\cos(15^{\circ})$

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સાબિત કરો કે $\tan 3x \tan 2x \tan x = \tan 3x - \tan 2x - \tan x$.

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