OA and OB are opposite rays: a) if x=75, what is the value of y? b) if y=110, what is the value of x?g1.PNG

    
Match the items on the right to the items on the left.
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since ∠AOC and ∠BOC form a linear pair, ∠AOC+∠BOC= 180°
a) if x=75, then we have 75+y=180°.
y=180-75=105
b) if y=110, then we have x+110= 180
x=70