Two vectors having equal magnitudes $A$ make an angle $\theta$ with each other. The magnitude and direction of the resultant are respectively

  • A
    $2\,A \cos \frac{\theta}{2}$, along bisector
  • B
    $A \cos \frac{\theta}{2}$, at $45^{\circ}$ from one vector
  • C
    $2\,A \sin \frac{\theta}{2}$, along bisector
  • D
    $A \cos \frac{\theta}{2}$, along bisector

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