$\frac{\sin 5 \theta}{\sin \theta}$ किसके बराबर है?

  • A
    $16 \cos ^4 \theta-12 \cos ^2 \theta+1$
  • B
    $16 \cos ^4 \theta+12 \cos ^2 \theta+1$
  • C
    $16 \cos ^4 \theta-12 \cos ^2 \theta-1$
  • D
    $16 \cos ^4 \theta+12 \cos ^2 \theta-1$

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मान लीजिए $f_n(x) = \tan \frac{x}{2}(1 + \sec x)(1 + \sec 2x) \dots (1 + \sec 2^n x)$, तो

यदि $p = \tan 20^{\circ}$ है,तो $\frac{\tan 160^{\circ} - \tan 110^{\circ}}{1 + \tan 160^{\circ} \tan 110^{\circ}}$ का मान $p$ के पदों में क्या होगा?

यदि $\sin \theta - \cos \theta = \frac{1}{\sqrt{3}}$ है,तो $\sin(2\theta) + \cos(4\theta) + \sin(6\theta) = $

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