यदि $x=a(\sin \theta+\cos \theta)$ और $y=b(\sin \theta-\cos \theta)$ है,तो $\frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $-2$

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