$\frac{\cot ^2 15^{\circ}-1}{\cot ^2 15^{\circ}+1} = $

  • A
    $\frac{1}{2}$
  • B
    $\frac{\sqrt{3}}{2}$
  • C
    $\frac{3 \sqrt{3}}{4}$
  • D
    $\frac{\sqrt{3}}{4}$

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Similar Questions

જો $p = \tan 20^{\circ}$ હોય,તો $\frac{\tan 160^{\circ} - \tan 110^{\circ}}{1 + \tan 160^{\circ} \tan 110^{\circ}}$ ની કિંમત $p$ ના સ્વરૂપમાં શું થાય?

$\cos \left(\frac{2 \pi}{7}\right) + \cos \left(\frac{4 \pi}{7}\right) + \cos \left(\frac{6 \pi}{7}\right)$ ની કિંમત શોધો.

$\sin^{2}\left(\frac{\pi}{8}\right)$ ની કિંમત =

જો $\tan A = \frac{1}{2}$ હોય,તો $\tan 3A = $

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

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