If I be the incentre of ΔABC and ∠B = 70° and ∠C = 50°, then the magnitude of ∠BIC is

A. 130°

B. 60°

C. 120°

D. 105°

Answer: Option C

Solution(By Examveda Team)

According to question,

As we know that
   ∠A + ∠B + ∠C = 180°
∴ ∠A = 180° -70° - 50°
   ∠A = 60°
∴ ∠BIC = 90° + $$\frac{1}{2}$$ × 60°
   ∠BIC = 120°