यदि $\cos ^{-1}\left(\frac{5}{13}\right)+\cos ^{-1}\left(\frac{3}{5}\right)=\cos ^{-1} x$ है,तो $x$ का मान ज्ञात कीजिए।

  • A
    $\frac{3}{65}$
  • B
    $\frac{-36}{65}$
  • C
    $\frac{-33}{65}$
  • D
    $-1$

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