यदि $\sin x - \sin y = \frac{27}{65}$ और $\cos x - \cos y = -\frac{21}{65}$ है,तो $\sin(x + y)$ का मान ज्ञात कीजिए।

  • A
    $-\frac{63}{65}$
  • B
    $\frac{16}{65}$
  • C
    $\frac{63}{65}$
  • D
    $-\frac{16}{65}$

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