यदि $y = 3\,\sin\,x + 4\,\cos\,x$ है,तो $y$ का अधिकतम मान ज्ञात कीजिए।

  • A
    $-5$
  • B
    $+5$
  • C
    $7$
  • D
    $1$

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निम्नलिखित व्यंजक का मान $3(\sin^{4} \theta + \cos^{4} \theta) + 2(\sin^{6} \theta + \cos^{6} \theta) + 12\sin^{2} \theta \cos^{2} \theta$ ज्ञात कीजिए।

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