In ΔABC, ∠B = 60° and ∠C = 40°; AD and AE are respectively the bisector of ∠A and perpendicular on BC. The measure of ∠EAD is:

A. 9°

B. 11°

C. 10°

D. 12°

Answer: Option C

Solution(By Examveda Team)

As we know

$$\eqalign{ & \angle EAD = \frac{{\angle B - \angle C}}{2} \cr & \angle EAD = \frac{{60 - 40}}{2} \cr & \angle EAD = {10^ \circ } \cr} $$