જો $\cos A = \frac{3}{4}$ હોય,તો $32\sin \frac{A}{2}\cos \frac{5A}{2} = $

  • A
    $\sqrt{7}$
  • B
    $-\sqrt{7}$
  • C
    $7$
  • D
    $-7$

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સાબિત કરો કે $\frac{\sin 5x - 2\sin 3x + \sin x}{\cos 5x - \cos x} = \tan x$.

જો $\sin \theta = -\frac{4}{5}$ અને $\theta$ ત્રીજા ચરણમાં હોય,તો $\cos \frac{\theta}{2} = $

જો $\theta = \frac{\pi}{9}$ હોય,તો $1 + 27 \tan^2 \theta - 33 \tan^4 \theta + \tan^6 \theta = $

જો $\cos \theta = \frac{-3}{5}$ અને $\theta$ બીજા ચરણમાં ન હોય,તો $\tan \frac{\theta}{2} = $

$\tan 3A - \tan 2A - \tan A = $

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