$3\cos \theta - 4\sin \theta $ का अधिकतम मान क्या है?

  • A
    $3$
  • B
    $4$
  • C
    $5$
  • D
    इनमें से कोई नहीं

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$\tan 5x - \tan 3x - \tan 2x$ किसके बराबर है?

व्यंजक $\frac{\tan(x - \frac{\pi}{2}) \cdot \cos(\frac{3\pi}{2} + x) - \sin^3(\frac{7\pi}{2} - x)}{\cos(x - \frac{\pi}{2}) \cdot \tan(\frac{3\pi}{2} + x)}$ का सरलीकृत रूप क्या है?

यदि $A + B + C = \pi ,$ तो $\cos \, 2A + \cos \, 2B + \cos \, 2C = $

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