Question:
In the below figure, POS is a line, Find x?
Solution:
Since ∠POQ and ∠QOS are linear pairs
∠POQ + ∠QOS = 180°
∠POQ + ∠QOR + ∠SOR = 180°
60 + 4x + 40 = 180
4x = 180 - 100
4x = 80
x = 20
Hence, Value of x = 20
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