The two angles are related to supplementary.
Relation of angle:
Given angle:
[tex]\to 60^{\circ}\\\\\to 120^{\circ}\\\\[/tex]
Calculating the sum of angle:
Sum of angle[tex]= 60^{\circ}+120^{\circ} = 120^{\circ}[/tex]
Since the sum of supplementary is [tex]180^{\circ}[/tex] and really you're when you combine the different sides together. These angles are those that add up to [tex]180^{\circ}[/tex].
Therefore, the final answer is "Option A".
Find out more information about the angle here:
brainly.com/question/19303524