यदि $(1 + \sin A)(1 + \sin B)(1 + \sin C) = (1 - \sin A)(1 - \sin B)(1 - \sin C)$ है,तो प्रत्येक पक्ष किसके बराबर है?

  • A
    $\pm \sin A \sin B \sin C$
  • B
    $\pm \cos A \cos B \cos C$
  • C
    $\pm \sin A \cos B \cos C$
  • D
    $\pm \cos A \sin B \sin C$

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$\sin \frac{\pi }{14} \sin \frac{3\pi }{14} \sin \frac{5\pi }{14} \sin \frac{7\pi }{14} \sin \frac{9\pi }{14} \sin \frac{11\pi }{14} \sin \frac{13\pi }{14}$ का मान किसके बराबर है?

यदि $x = r \cos \theta \cos \phi$,$y = r \cos \theta \sin \phi$ और $z = r \sin \theta$ है,तो $x^{2} + y^{2} + z^{2}$ का मान ज्ञात कीजिए।

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$\tan 20^\circ + 2\tan 50^\circ - \tan 70^\circ$ का मान किसके बराबर है?

यदि $A + B + C = 180^o$ है,तो $\cot \frac{A}{2} + \cot \frac{B}{2} + \cot \frac{C}{2}$ का मान क्या होगा?

$\sqrt{3} \csc 20^\circ - \sec 20^\circ = $

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