$\alpha, \beta \in \left(0, \frac{\pi}{2}\right)$ के लिए,मान लीजिए $3 \sin (\alpha+\beta)=2 \sin (\alpha-\beta)$ और एक वास्तविक संख्या $k$ इस प्रकार है कि $\tan \alpha=k \tan \beta$ है। तो $k$ का मान ज्ञात कीजिए:

  • A
    $-\frac{2}{3}$
  • B
    $-5$
  • C
    $\frac{2}{3}$
  • D
    $5$

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