यदि प्रतिलोम त्रिकोणमितीय फलन मुख्य मान लेते हैं,तो $\cos ^{-1}\left(\frac{3}{10} \cos \left(\tan ^{-1}\left(\frac{4}{3}\right)\right)+\frac{2}{5} \sin \left(\tan ^{-1}\left(\frac{4}{3}\right)\right)\right)$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $\frac{\pi}{4}$
  • C
    $\frac{\pi}{3}$
  • D
    $\frac{\pi}{6}$

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