Physics

Problem

\vec{A} + \vec{B} = \vec{C}

and

|\vec{A}| = |\vec{B}| = |\vec{C}|

then the angle between

\vec{A}

and

\vec{B}

is :- (1)

45^\circ

(2)

60^\circ

(3)

90^\circ

(4)

120^\circ