જો $\tan \theta = \frac{\sin \alpha - \cos \alpha}{\sin \alpha + \cos \alpha}$ હોય,તો $\sin \alpha + \cos \alpha$ અને $\sin \alpha - \cos \alpha$ ની કિંમત શું થાય?

• A
  $\sqrt{2} \cos \theta, \sqrt{2} \sin \theta$
• B
  $\sqrt{2} \sin \theta, \sqrt{2} \cos \theta$
• C
  $\sqrt{2} \sin \theta, \sqrt{2} \sin \theta$
• D
  $\sqrt{2} \cos \theta, \sqrt{2} \cos \theta$