A) \[{{36}^{o}}\]
B) \[{{62}^{o}}\]
C) \[{{72}^{o}}\]
D) \[{{108}^{o}}\]
Correct Answer: C
Solution :
\[3y+2y={{180}^{o}}\] \[\Rightarrow \]\[y={{180}^{o}}\div 5={{36}^{o}}\] \[x=2y=2\times {{36}^{o}}={{72}^{o}}\]
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