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:

Answer: Option C

Solution

Answer: Option C

Solution:

As we know

$$\begin{array}{rl}& \angle EAD=\frac{\angle B-\angle C}{2}\\ & \angle EAD=\frac{60-40}{2}\\ & \angle EAD=10^{\circ }\end{array}$$