A) \[{{50}^{o}}\]
B) \[{{60}^{o}}\]
C) \[{{70}^{o}}\]
D) \[{{90}^{o}}\]
Correct Answer: A
Solution :
\[\angle CBF=\angle CDA\] \[\Rightarrow \] \[\angle CDA={{130}^{o}}\] \[\angle CDA+x={{180}^{o}}\] (linear pair) \[\Rightarrow \] \[x={{180}^{o}}-{{130}^{o}}\Rightarrow x={{50}^{o}}\]You need to login to perform this action.
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