A) \[{{130}^{o}}\]
B) \[{{60}^{o}}\]
C) \[{{120}^{o}}\]
D) \[{{105}^{o}}\]
Correct Answer: C
Solution :
\[\angle IBC=\frac{{{70}^{o}}}{2}={{35}^{o}}\]; \[\angle ICB=\frac{{{50}^{o}}}{2}={{25}^{o}}\]; \[\therefore \] \[\angle BIC={{180}^{o}}-{{35}^{o}}-{{25}^{o}}\] \[={{180}^{o}}-{{60}^{o}}\] \[={{120}^{o}}\]You need to login to perform this action.
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