OA and OB are opposite rays. 3x and 2y+5 are measures of BOC and Co respectively.
1) if x 25, what is the value of y
2) if y=65, what is the value of x?
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Step-by-step explanation:
Given, x=25
o
=> 3x
o
=75
o
We know that ∠AOC,∠BOC are linear pairs of angles.
∴∠AOC+∠BOC=180
0
(2y+5)
o
+3x
0
=180
2y+5+75=180 [ ∵ 3x
o
=75
o
]
2y+80=180
2y=180−80
y=
2
100
∴y=50
∘
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