In Fig. 8.123, the value of y is
A. 20°
B. 30°
C. 45°
D. 60°
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Answered by
23
Concept :
Linear pair of angles:
If Non common arms of two adjacent angles form a line, then these angles are called linear pair of angles.
From figure :
3x + y + 2x = 180° (Linear pair)
5x + y = 180°
y = x (Vertically opposite angles)
5x + x = 180°
[y = x]
6x = 180°
x = 180°/6
x = 30°
Now,
y = x = 30°
Hence the value of y is 30° .
Option (B) 30° is correct.
HOPE THIS ANSWER WILL HELP YOU…..
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Answered by
6
Answer:
his answer is right
Step-by-step explanation:
therefore y = 30⁰
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