I is the incentre of ΔABC, ∠ABC = 60° and ∠ACB = 50°, Then ∠BIC is
A. 55°
B. 125°
C. 70°
D. 65°
Answer: Option B
Solution (By Examveda Team)
According to question,
BI and CI are the angle bisector
∴ ∠CBI = 30° and ∠BCI = 25°
In ΔBIC
∠CBI + ∠BCI + ∠BIC = 180°
30° + 25° + ∠BIC = 180°
∠BIC = 180° - 55°
∴ ∠BIC = 125°
This Question Belongs to Arithmetic Ability >> Triangles
Join The Discussion