13. In the adjoining figure, OA and OB are opposite rays.
(1) If x = 105, what is the value of y?
(ii) If y = 40, find the value of x.
Answers
Answered by
0
Answer:
Explanation:
Given, x=25
o
=>3x
o
=75
o
We know that, ∠AOC,∠BOC are linear pair 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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Answered by
0
Explanation:
Understand that
Straight angle = 180°
: x°+y°=180°
first sub-problem contains (y=75°)
and the second contains (x=140°) as if vice-versa because they are adjacent angles (same to the other side)
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