Mathematics

Problem

Two vectors have magnitudes

5\,\text{units}

and

12\,\text{units}

and act at an angle of

60^{\circ}

to each other. What is the magnitude of their resultant? a)

16.5\,\text{units}

15.1\,\text{units}

13\,\text{units}

14.1\,\text{units}