$\frac{1}{4} \tan \frac{\pi}{8} + \frac{1}{8} \tan \frac{\pi}{16} + \frac{1}{16} \tan \frac{\pi}{32} + \dots \infty$ पदों का मान किसके बराबर है?

  • A
    $\frac{5}{\pi} - \frac{1}{2}$
  • B
    $\frac{3}{\pi} + \frac{1}{2}$
  • C
    $\frac{2}{\pi} - \frac{1}{2}$
  • D
    $\frac{4}{\pi} - \frac{1}{4}$

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व्यंजक $2\cos \frac{\pi }{13} \cos \frac{9\pi }{13} + \cos \frac{3\pi }{13} + \cos \frac{5\pi }{13}$ का मान क्या है?

$\sqrt{2+\sqrt{2(1+\cos 4A)}}$ का मान किसके बराबर है?

यदि $\tan x = \frac{2b}{a - c}$ $(a \ne c)$,$y = a \cos^2 x + 2b \sin x \cos x + c \sin^2 x$ और $z = a \sin^2 x - 2b \sin x \cos x + c \cos^2 x$ है,तो:

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यदि $\sqrt x + \frac{1}{{\sqrt x }} = 2\cos \theta$ है,तो ${x^6} + {x^{ - 6}} = $

यदि $A, B, C$ एक त्रिभुज के कोण हैं,तो $\sin 2A + \sin 2B - \sin 2C$ किसके बराबर है?

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