यदि $\alpha, \beta$ न्यून कोण हैं जैसे कि $\frac{\sin \alpha}{\sin \beta} = \frac{6}{5}$ और $\frac{\cos \alpha}{\cos \beta} = \frac{9}{5 \sqrt{5}}$,तो $\sin \alpha = $

  • A
    $\frac{4}{5}$
  • B
    $\frac{3}{5}$
  • C
    $\frac{3}{4}$
  • D
    $\frac{2}{3}$

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