Two forces of each act at a point making an angle of with each other

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

Problem

Two forces of

5\,\text{N}

each act at a point making an angle of

60^{\circ}

with each other. What is the magnitude of the resultant force? (a)

9.7\,\text{N}

(b)

10\,\text{N}

(c)

8.7\,\text{N}

(d)

7.5\,\text{N}