Two vectors of equal magnitude are inclined at an angle

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

\theta

. If the magnitude of their resultant is equal to the magnitude of either vector, what is the value of

\theta

? (a)

90^{\circ}

(b)

150^{\circ}

(c)

120^{\circ}

(d)

60^{\circ}