If A and B are unit vectors and θ is acute angle between them, choose the correct option
(1) \(|\vec A - \vec B| = |\vec A + \vec B| tan \frac\theta 2\)
(2) \(|\vec A - \vec B| = |\vec A + \vec B|cos \frac\theta 2\)
(3) \(|\vec A + \vec B| = |\vec A - \vec B|cos \frac\theta 2\)
(4) \(|\vec A +\vec B| = |\vec A - \vec B| tan \frac\theta 2\)
